Governor X returns and uses his scientific powers to abduct a child who has special chromosomes and use him to make him the new Galactor leader.

But thanks to a bomb somebody installed in the robot statue it is destroyed, and the team sees Getz killed by a feather shuriken. They pursue a fleeing shadow which looks like Joe. But was it really Joe? Could he be alive? The shadow leads them to a secret Galactor base which uses the ruins of the shrine as camouflage.

Somebody sneaks into Galactor's Headquarters and a plan to build a huge base in San Frangeles is relayed to the Science Ninja Team. Ken and the others are baffled at the voice of the communication. It sounds exactly like Joe's. Elsewhere, Galactor has a corps of knights, clad in black armour made of a special Sigma lightray-strengthened steel, sneak in places to steal nuclear energy.

In the country Amelia, between the cities New Jork and Scratton, there's the Dera Desert. Below that desert, Galactor is building a scecret base which is supposed to become a very important military strong point. But because they have rushed its completion, a huge explosions occurs and triggers a 9.2 magnitude earthquake in the area. The two cities get into a very critical situation.

In the underdeveloped jungle country Fruginia, a village is destroyed by cavemen. Soon after, Neanderthal cavemen attack the country of Amehon, which is 200 kilometers away. They are immigrants from Fruginia who have been transformed by Galactor with the help of a special liquid. Among them is Toro, the father of young Shiro, whom Ken and the others met earlier by coincidence.

South of the Road Island, accidents involving ships and airplanes keep happening. There are no clear messages and the cause of the accidents is unknown. The Science Ninja Team suspects that the experimental city in the middle of that island, Egypt, has something to do with it. The city has been built in order to collect the pyramid power, which is impossible to control when rising. Jinpei goes to Egypt alone to investigate.

Sosai X's voice resounds: "Did you see that, Gel Sadra? This is the space plant Redda which I manufactured". Through Governor X's mysterious extraterrestrial science, the artificial space plant Redda is born. By coincidence, a boy named Harry finds one seed which has been blown away, and takes it back home. Sprouting, Redda grows very quickly and attacks Jinpei, who has come to visit Harry.

A dark Galactor satellite keeps stealing space satellites and destroying them. It can absorb radiowaves, infrared waves and light, thus it is able to evade any radar. First a satellite investigating Mars disappears, then a communication satellite, then a space ferry and finally a weather observation satellite. Galactor wants to have the hindering Earth satellites out of the way so they can attack the sun with a long range beam cannon from their base on the back side of the moon.

Gel Sadra plans to destroy the Science Ninja Team with the Supermissile "Sea Tiger", from which it is supposedly impossible to escape, even if detected. However, Governor X loses his patience because of the many previous failures and wants to rebuke Gel Sadra for her arrogance.

Suddenly, the islands in the South Pacific Ocean are surprised by strange weather. Tens of thousands of people freeze to death because of the wind, snow and icy cold. This is caused by Galactor using the Earth's magnetic field to manipulate the Van Allen belt.

Because of a defect in their car, Ken and Jinpei have a breakdown in the desert. A young girl named Julia takes them in her car. She tells them that she's on her way to the harbor to meet her older brother Jeff, who works as a secret guardsman at the ISO.

Observatories and weather stations all over the world are attacked by UFOs. Additionally, authorities in the field of space communication are assassinated one after the other. Even Nambu can't guess the true intentions behind the incidents. In order to protect Dr. Kasshingu of the Irigutchi observatory, the Science Ninja Team goes to his whereabouts. But it's too late, they meet Dr. Kasshingu as he is already dying.

Joe sneaks inside a Galactor base, and finds a girl there who tells him that Governor X is at volcano Vesuvio. He wants to destroy the earth with missiles.

A mysterious UFO flies over cities and mountainous regions all over the world. Additionally, airplane passengers who vanished half a year ago appear again, without memory. Because the spaceship has come to request to talk with humankind, the Science Ninja Team undertakes the task on a remote island in the South Sea. The person who exits the space craft is the famous Earth Defense Force pilot Major Borg, who was believed to be dead, killed in combat against Galactor.

Galactor's cruise missile crashes and explodes in a fishing village. Its inhabitants have disappeared. Ryu is sent to investigate and saves a girl named Yuka who is pursued by the villagers because they suspect her of arson. Yuka feels love at first sight for Ken, whom she meets because of the investigation. She tries to ensnare him. However, Ken is cold towards her, he does not understand such feelings.

A Galactor traitor steals a secret micro file from a base and gets it to the ISO headquarters. In order to decode the file, Joe goes to the Ongurei Research Institute where they have some special decoding equipment. But there's an electronic transmitter attached to the file. Its signal is detected by Galactor and they proceed to attack Joe. Saved from the critical situation by Ken and the others, Joe hurries towards the research institute again.

An experimental city named Seatoland that swims in the ocean, has been built by the ISO. It is attacked by a Galactor monster called Umiba, and faces total destruction. When this message is received, the Science Ninja Team is mobilized, but Dr. Siski, in charge of Seatoland, refuses to collaborate with them. Milly, the doctor's daughter, has been taken hostage by Galactor during the attack.

A spaceship is being repaired by Jun. Jinpei releases a safety button because he is threatened by a gun, causing the spaceship to take off. The robot threatening Jinpei turns out to be a girl who introduces herself as Sachiko. Sachiko wants to meet her father, Tetsutaro Arimura, who works as research head at the Earth Investigation Station Moa.

Communication with police and military forces in the highland of Oshia keeps getting cut off. Joe has been behaving strangle as of late, and as Ryu follows him, he disappears in that same spot. Ryu leaves behind the words "spiral galaxy!?".

Tojo island, in the country Rizoto, sinks into the sea because of mysterious movements in the Earth's crust. Jun has gone to investigate the small islands in the vicinity and goes into a cave on one island. There she falls into a trap of a Galactor spy disguised as a survivor.

Ken goes to the luxurious residence of his old friend Karl III, with whom he had lost contact. Karl is the successor to the leadership of a group of 300 enterprises in the whole world and is now organizing a meeting of the former pupils of the flying school which he and Ken attended. But Ken's heart is heavy because he has a task to verify whether or not the rumour that Karl wants to build an empire and conquer the world is true.

People keep collapsing everywhere. 20,000 humans die of unknown causes. Since radioactivity has been detected at the same time, the Science Ninja Team starts searching for its source. While investigating, Jinpei and Ryu encounter three boys and go with them to the Negiris plateau. The boys love UFOs and wanted to try to establish a contact with the extraterrestrials.

Big movements of the Earth's crust occur at the North Pole. Immediately thereafter, the adventurer Shimomura leaves Greenland on his way to the North Pole. He is reported missing on the third day of his voyage. By coincidence, he discovered a Galactor base and has been shot.

Galactor releases test waves of the solarshifter. At the same time, in the city of Owari, accidents due to anomalities in the main computer keep happening, which provoke a panic. The Science Ninja Team goes to Owari in order to find out the reason for all this.

A spaceship from Earth is suddenly attacked by meteorites, and the Science Ninja Team hurries to the bottom of the sea, to the spot where the meteorites fell. But there, mysterious robots that arrived a bit earlier, are already collecting the meteorites. Is it Galactor...?? Joe follows the robots and corners them, but they are not Galactor. On the contrary, they greet him as "brother".

The Science Ninja Team departs to pick up Dr. Pandora, who is supposed to become Dr. Nambu's secretary. In order to remain inconspicuous, they put Dr. Pandora and her car in a truck and head towards G-Town. Suddenly, Dr. Pandora tells them to leave the road.

The Science Ninja Team hurries to the hospital. When Dr. Pandora announces that she's giving the orders now, Joe tries to shoot her. Ken stops him. Because the person who shot Dr. Nambu is not known, Dr. Pandora then orders the team to investigate a certain spot from where specific brain waves are emanating.

In the city, Joe is attacked by a female biker. She says "ask the feather shuriken, why this happened" and escapes. Later, upon Dr. Nambu's order, Joe moves out with his comrades to investigate the defeat of the secret tank forces of the international defense army.

Galactor has built a base on the mountain K3 which is located in the Himalayas. From there, a magma mega cannon shoots through the Earth and attacks cities all over the world. The only way to penetrate the base is through the North Wall, which is impossible to climb however, because it's 3,000 meters high and vertical.

Because his father is hurt, Ryu gets into the Horned Tank and goes back to his native fishing-village. However, in the sea around the village, Galactor plans to destroy a gas chamber and let the land sink into the sea. When Gel Sadra sees the G-5 heading towards the village, she thinks that the Science Ninja Team got wind of her plan.

In G-Town, the G-1 has been altered in order to reduce its mach resistance and enter the atmosphere more smoothly. Ken boards the G-1 immediately and goes out on a test flight. But he enjoys the flight so much that he doesn't pay enough attention and is shot down when he accidentally gets near a secret Galactor base. Ken somehow manages to make a forced landing, but his bracelet is damaged and he can neither establish a connection nor transform.

The information arrives that there's a secret Galactor base in the Andes. Ken and Ryu go to the Andes in disguise in order to contact the intelligence member Yupanki. However, Galactor makes them drink some medicine, whereupon they lose their memory, forgetting their task and their names.

A big earthquake suddenly happens in New Joke. But the inhabitants are not the only ones who are shocked - so is Gel Sadra. She never gave this order! This operation has been undertaken by the Galactor commander Panther. He convinces Gel Sadra to participate in the operation, thus showing Governor X her strength. The Science Ninja Team goes to investigate and detects a missile base in a huge underground, public hall. Galactor has shot a missile into a gas chamber and thus created the earthquake.

In a Galactor base at an upper course of the Amazon, a new weapon using Hypertonium is produced. The base is protected by the mechanical plants which surround it and push back any invader. Jinpei is investigating the area around the river when somebody attacks him and shoots him down. He is saved from the piranhas in the river by some local children.

Joe saves the son of Kaiser from an approaching car and becomes his friend. Together they play soccer while Kaiser draws Joe. But Kaiser is a former Galactor member and the only one who can handle a weapon Berg Katse has left behind.

In an underground ISO city in Siberia that uses mantel energy, a huge explosion takes place which results in a high level of radioactivity. Causing this has been Megatonra, a monster which has been brought from space by Governor X and which grows by absorbing radioactivity. Megatonra has been put under the Earth by Gel Sadra where it has been eating radioactive waste and has grown considerably.

Jinpei has left to bring a detector to a secret ISO research institute in the Rakki mountain chain. When he is almost there, an earthquake hits. Jinpei sees a young orphaned puma and does not bring the detector to the institute. However, that institute is destroyed by the unusual earthquake. After Jinpei returns, he gets rebuked by Joe and Ken because he took care of the puma.

Dragon Island, where once upon a time a dragon was supposed to have shown itself. Again an informant disappears who has been visiting and investigating this island. Is something there? Nambu thinks so, and according to his orders, the Science Ninja Team is mobilized. Before them appears the Iron Devil Dragon from Galactor. The God Phoenix is hit by an electromagnetic light ray and it's electrical systems are jammed.

Nuclear experiments have taken place in the Straits of Gibraltar. The experiments are for the development of a new energy by Galactor. Nambu sends the Science Ninja Team to that spot. But, the God Phoenix is caught in another nuclear explosion and disappears. Joe had previously left by himself in the G-2 to investigate, and the shock of the explosion causes him to lose energy.

Dr. Pandora conducts an experiment for a machine which enables humans to communicate with animals. The Science Ninja Team spends some peaceful time at a national park with animals and children, at least until Galactor attacks. While they are protecting the children participating in this experiment, Joe gets a message from Dr. Raphael that Governor X is in the Kongal Plateau in Agrica and has begun his ultimate plan. Joe decides to leave on his own to investigate, but he is captured.

Gel Sadra builts a beam cannon in a secret base. Governor X sends the main component by subterranean rocket from his headquarters to Gel Sadra's base. But the rocket goes out of control when it collides with a crack in the Earth's crust and heads the surface... Gel Sadra is about to collect the main component and destroy the rocket in order to maintain the secret, but through an accident with the explosives, she is left all alone.

Richman the Second gets the international scientific peace prize for the development of a solar telescope. Dr. Pandora has come to the inauguration party as Dr. Nambu's companion. She feels a strange sensation from Richman (Gel Sadra), like she has never experienced before.

While investigating Mars, an Earth satellite is blown up, and a second space base on Solkila Island is destroyed as well. But the culprit is not Gel Sadra. She faces the fact the Governor X praised the destruction of the first base as a hint. She assures that she can do this as well and goes out to do so.

Unusual weather conditions are occurring because of natural disasters on the sun. Dr. Nambu suspects that this is a test of Galactor's solarshifter plan. In fact, its only the first test stage of that plan. The solarshifter plan is a terrible operation which looks to use the solarshifter bases on the Mars, Venus and Earth to move the sun. When the main beam cannon on Venus and Earth are completed, it will become horrible.

Through Ken's death defying attack, the Mars base has been destroyed. But Governor X does not want to give up on the Solarshifter plan and orders Marstora to repair the base within three days. "In three days, Mars, Venus and Earth will become a triangle and fire at the same time. The base on Earth is already completed!" Elsewhere, Ken's orbiter only has oxygen enough left for two days.

The ISO and the UN have developed a special radar to search for the main beam cannon. But Galactor learns about this, and during one of their attacks, Chief Anderson is badly hurt. Gel Sadra wants to reveal the true face of Gatchaman. Since she doesn't know what he looks like, she starts attacking one employee of the ISO after the other. Ken feels sorry about all the victims.

Because of the Solarshifter plan and the consequently unusual weather, icebergs break out one after the other at the North Pole. In order to stop a huge iceberg, G-Town goes to Sanbur City in the country Aberika. When Dr. Pandora goes out for a meeting, the Galactor ninja group Galakon sneaks into G-Town instead of her.

One disaster after the other occurs all over the Earth. In order to help and to understand the situation, the ISO travels from one location to the other. But that center for peace is finally occupied by Galactor as well. Gel Sadra addresses the whole world and publicly declares world supremacy.

The persons Governor X fears most are G-2, Condor Joe, and Dr. Raphael. Before his plan can be realized, those two have to be eliminated. Galactor choses Joe before his transformation as a target. Joe pushes back the persistent attack of the Galakon team, but he loses his bracelet in the end.

Gel Sadra wonders about her own past and goes to ask Governor X. Soon, she learns the shocking truth. She is Pandora's daughter! Governor X uses this fact and invites Pandora to the base. He had promised to Gel Sadra that if Pandora joined Galactor, she could be reunited with her mother.

The team learns that Pandora's daughter, Sammie, was taken by Governor X and mutated into Gel Sadra due to her unlimited cells. Joe's energy is diminishing, and Dr. Nambu discovers a bomb built into Joe that is supposed to destroy Governor X.

The Solarshifter plan is progressing very well in its Solar System-wide scale, and unusual phenomena keep occurring everywhere. Gel Sadra is being pursued and wounded by Galactor. Her ship crashes, but Ken finds her. Joe joins them, and then punches Ken out. Joe has recharged his energy at a power plant. He goes along with Gel Sadra towards the headquarters of Governor X and confronts him.