Weeks after the dust settles from Sosai X's destruction, a tiny fragment of the alien revives and begins to rebuild itself into Sosai Zed. Using the remains of an old shipyard, Zed builds a vast mechanical pyramid fortress and levitates it over the ocean.

Egobossler's first attack, backed up by one of Zed's giant mechs, completely startles out heroes. Ken, Jun, Jinpei and Ryu rush to the scene of the battle (leaving Joe behind to quietly expire). The mech is too powerful, and the New Godphoenix is completely trashed in the first skirmish with Egobossler.

Galactor is expanding its power at an astonishing speed. An oasis in a village in the wasteland was occupied for the invasion of the Agrica continent. With the help of the village chief, the ninja squad plans to take back the village and take back the oasis, which is the water source for the villagers' daily lives.

Galactor elected the independent nation of Parlon Island as his forward base. The ninja squad tries to recapture the island, but the citizens are taken hostage and cannot get close to the island. Even Ken, who was able to infiltrate, is thrown into the sea by Galactor's special forces.

The Ninja Corps will escort an International Red Cross cargo ship carrying relief supplies to the port town of Canal, where refugees are located. However, the ship was destroyed by the iron beast mecha, and the refugees were captured by Galactor as slaves in the factory.

Ken asks the same question viewers have probably been asking since the beginning: "Enough battling the little guys--why can't we meet Egobossler head on?" The Team does, but fails miserably. This episode ends in a very disturbing role reversal scene with Ken--now beyond reason--raging at a laughing Egobossler, and Joe finally having to bring all his strength into play to drag Ken back into the Gatchaspartan.

The Kagaku Ninjatai continue their tries at direct confrontation by stealing aboard Zed's tower and facing him directly. This doesn't work either (can we say "outnumbered"?), though they do get in a few good punches.

Prisoners escape from Gertland's prison. Galactor was killing prisoners who approached the databank fortress he was building nearby. Meanwhile, Ken and Joe head to the fortress and meet three escaped prisoners.

Dr. Doll, who is collaborating with Galactor, was developing a material annihilation cannon that would destroy all matter on Earth. In order to stop the father, the ninja team persuades the father and takes his daughter, Karen, who has been protected to the National Defense Forces camp.

Galactor was searching for the location of Gatchaman's base. The purpose is to retrieve the data of the Agrica invasion operation that was stolen. However, due to the strict security of the ISO, Egobosler sent in the criminal Wittendorf.

Z Press, a train carrying important equipment for Galactor's invasion of Agrica. The ninja squad attempts to attack the train as it heads towards Baburaltar Bridge. However, it was discovered that there were hostages in the car, and they were unable to attack.

Galactor's large force begins an invasion of Agrica. Meanwhile, the Ninja Team succeeds in decoding the captured operational data. According to the data, Galactor's purpose seems to be to occupy resource bases such as mantle energy and iron ore.

The decisive battle between the Galactor forces and the United Nations forces has begun. The Ninja Squad launches a plan to crash a fake Gotcha Spartan into the enemy and attack the command base while they are there. Joe and Ryu disguised themselves as Galactor fighters, and the other three disguised themselves as travelers.

Due to the Ninja Corps' strategy, Galactor retreats from Agrica. Egobosler returns to his headquarters, and his troops begin to be routed around the world. Ken attempts to invade Satanforhen by himself and crush Galactor, but is surprised by the appearance of the soldiers in the city.

Galactor was hidden underground in the ruins after Satanforhen was destroyed by the Ninja Corps and the United Nations Forces. Egobosler is accused of his blunder by President Z, and his collaborators change their relationship to a master-servant relationship, which he reluctantly agrees to.

Peace had come to the world due to Galactor's defeat, but Galactor, who moved underground to Galatown, resumed his activities. He threatens President Eisen and his daughter, Abelia, and plans to kill the leaders of various countries.

Galactor appears in the town of New Joke with nerve gas in hand and spreads the gas in the downtown area. Jinbei, who allowed Galactor to invade due to his own mistake, gave the girl his own oxygen tank and collapsed.

The United Nations military's secret weapons depot has been attacked by Galactor. The base is completely destroyed with overwhelming attack power. The leader of a special fighter squadron known as the ``Hawks of Ticilia'' was angered by the United Nations soldiers.

Mercenary scientist Professor Gordon develops an indestructible material called Neophryte and decides to sell it to the highest bidder. So he summons agents from both Gallactor (Egobossler's first officer, Kempler) and the ISO (the Gatchaman, naturally) to meet alone on a spot he specifies.

At the request of Dr. Spencer, who is researching President Z, the Ninja Team is to carry data about President X to the Space Science Institute on Bogie Island. However, President Z realizes that his true identity is being probed and orders the destruction of the island.

Joe went to BC Island to visit his parents' graves. BC Island was once an important base for Galactor, and is also an area where peace was restored by the Ninja Corps. Joe is reunited with his childhood friend Anna at his parents' grave.

Maastra, who once served as President X's subordinate, is still alive. Mastra returns to the Earth Castle from the Mars base and occupies the resource research satellite Lemuria 7. Meanwhile, the ninja squad invades the island where Galactor's squad has landed.

The King of Tangania, a peace activist, was attacked by children during a parade. Although the incident ends safely thanks to Ken's actions, similar incidents occur in various places. Moreover, they did not remember anything about the incident.

Gotcha Spartan was flying over Agrica in pursuit of Galactor's transport plane. However, Ken's Gotcha No. 1 crashes due to enemy attack. Ken, who was wandering around looking for friends, spends the night in the village of a local young man named Simba.

Oncain, who is one of Count Egobossler's old friends, is the last person on Earth to know his dark secrets. The Gatchaman team try to convince him to stay away from Egobossler.

Director Z had an abnormal fear of the ISO's space pulse research. There, he orders Egobosler to destroy the Space Pulse Research Institute in Kaubera City, but since the city is protected by United Nations forces, he is unable to do anything about it.

A woman named Zelda escapes from Galactor's pursuit and is protected by ISO. She has been exiled from Satanforhen. Then, he says, ``The devil's child Ern. The castle upstream of the Ain River. Egobosler'' and loses consciousness.

A secret letter arrives to the Ninja Team. This was essential to the resistance of the Gongor nation. What was written in the secret letter was collusion between the President's Zabanda and Galactor over uranium ore.

Galactor assaults the Mantle Energy Factory in Seraria City, but is forced to retreat due to an attack by the United Nations Phaser Tank Unit. Maastra stripped Egobosler of command and sent his men to the factory.

Mastra, who wants to clear up the stigma associated with the Mantle Energy Factory incident, begins a new operation. His plan was to release the slimy creatures he had brought back from Mars into New Joke City and attack the city's people.

Dr. Stahl, the research team leader for Space Pulse AQ3, which holds the secret key to Governor Z, is kidnapped by Galactor. In addition, other space energy researchers were also abducted and sent to Galaxtown on an underground train.

Galactor destroys observatories in various places under the orders of President Z. Meanwhile, Chief Engineer Kamo's grandson Shoichi comes to see his grandfather while a countermeasures meeting is in progress in the southern part of the country. However, it was impossible for Kamoe to meet him while he was developing a pulse focusing machine.

A research ship is attacked by the protruding horns of a monster in the Arctic Ocean and goes missing. Aboard the ship was oceanographer Dr. Beary. Ryu begins investigating Narbeka Port, where the ship departed, and rescues a girl who was being chased by mysterious men.

Dr. Nambu receives a call from astrophysicist Mr. Schubar, requesting contact. The doctor learns that Shuval's space pulse research is more advanced than ISO, so he goes to Shuval alone without informing the Ninja Team.

Nanbu was trying to elucidate the cosmic pulse based on Cheval's research report. President Z realized that Egobosler was also approaching the mystery of Pulse, and revealed the contents of his plan to bombard the Earth with an antimatter asteroid.

Nanbu and the ninja squad are heading to a secret space observatory in the North Pole in a special submarine. However, Ken remains at the base for G-suit attunement training. Joe, who actually knew the cause of Ken's illness, asked Nanbu for an explanation during the voyage.

Due to repeated use of Piper Shoot, cell destruction in Ken's body progressed. Dr. Nambu and Jun head to the Human Body Engineering Research Institute to explore cell regeneration methods. It turns out that Ken's cells can be regenerated using the cell activation device.

President Z appears in the Iberia region, and the ninja squad sets out to explore. There, Jinbei meets an injured dog and its owner, a girl. The girl, Camilla, is the daughter of a nomad, and she says that her village was attacked by Galactor, and her father and his friends were kidnapped.

An observatory in the North Pole has been destroyed by Galactor's attack. However, to unravel the mystery of the cosmic pulse, research in the Arctic is necessary. Therefore, the South ordered the establishment of a hypothetical observatory.

A task force led by Kemperer was approaching New Joke for an attack. The ninja squad begins evacuating citizens, and Jinbei arrives at St. Magdalene Island, which he is in charge of. Although the children were reluctant to evacuate, they were allowed to board the evacuation boat.

Ken, who was visiting for a test, bumped into a nurse in the hallway. The nurse is a spy for Egobosler and puts a transmitting substance on Ken. Then, when Ken returned to Gatchaman Base, Ego Bossler learned of its location.

In order to get to the bottom of Space Pulse AQ3, Nanbu falls into the hands of the enemy. Egobosler administered a truth-telling agent to find out the weaknesses of the Ninja Corps. Nambu tries to endure with his mental strength, but ends up suffering from the harsh punishment.

The South was hit by a deadly bullet. While the funeral is being held, Egobosler declares war on the entire world using 3D video. And then they blew up the base. The Ninja Corps sees this outrageous act and renews their resolve to defeat Galactor.

An antimatter asteroid with super destructive power is approaching Earth. A missile to destroy the meteor is launched from the space center to stop it. However, at the same time, the city of New Joke is being attacked by Galactor's iron beast.

The antimatter asteroid was destroyed by Ken and the Ninja Team's Ultra Hyper Shoot. However, debris falls on Earth, creating a magnetic storm and causing abnormal weather. Natural disasters occur in each country, cities are destroyed, and the world collapses.

Ken's cell destruction has progressed to the point where he will be extinct the next time he uses Hyper Shoot. Meanwhile, it becomes clear that a planet bigger than the antimatter asteroid that was destroyed is approaching Earth due to President Z's hands.

Gotchapartan flew into space to prevent an antimatter asteroid from colliding with Earth. Try to shift the orbit of a giant planet by destroying a space tractor. However, although the tractor was destroyed, the planet's orbit remained unchanged.

The Team searches for Zed in his tower, and are thrown around like playthings. When they finally meet up, they discover what happened to Egobossler: his corpse is pinned against a wall in Zed's main chamber, run through by his own sword. At this point, Joe picks up on Zed's vital signs (as Rafael had designed him to) and tracks the alien to his last refuge, where the Kagaku Ninjatai battle to destroy him...