Forced into an unwanted marriage with the son of the boss of the Asato family, Mira is suddenly rescued by Taiya, a young man who claims to be a delivery man who has broken into the church. Taiya drives a special car called "Rockstar" to deliver the future to the airport where his client, his lover, is waiting, but Hashiryan appears there. The wedding dress worn by Mi...

Mira joins Boomboonger and visits the secret garage in the basement of Hando's residence. There, a meeting was being held regarding the next delivery jobs.

Mira has taken a request from a delivery guy. Her client is a boy she met at her part-time job. Mira is ordered by Taiya to complete the mission on her own and heads for the delivery destination with a bicycle.

Mira who was a Boonboomger member is recognized and enjoyed by the public. But somehow her hands were handcuffed. The person who restrained Mira was Shirabe Saibu, an investigator from a certain organization.

Jou is assigned to watch over the Boonboomgers. He wants to protect people in a cool way, so he says, "Please let me join the Boonboomgers!" However, Taiya refuses, saying, "You can't do it!"

Jou is the new member of the Boonboomgers. Ishiro, who is "too serious to trust a police officer who is too serious...", decides to follow Jou to find out what his "secret face" is. Meanwhile, there is a powerful new enemy on Earth...!?

Boonboom has fallen in love. Mira, as a delivery person, decides to take Boonboom to the person he loves. Boonboom falls in love with someone he never expected...!? Meanwhile, Taiya gives something to Genba.

Taiya reveals his real intentions to form the Boonboomgers, which is to participate in the "Big Bang Grand Prix", the biggest and most important race of the entire universe, while fighting the Hashiriyans was not in his original plans.

Taiya is seriously wounded after his fight with Madrex and Shirabe informs the team that the ISA decided to have the Boonboomgers disbanded and their equipment confiscated.

Genba has his first solo delivery job for the ISA. Worried about him, Mira decides to tag along, when the Sunseaters attack the duo.

Taiya makes a special delivery to an old friend who inspired him to become a deliverer in the first place. Meanwhile, Cannonborg, another team captain arrives to assist the Sunseaters in taking over Earth.

Taiya meets Engine Speedor, a small, sentient car who asks Taiya to deliver him to his partner, Sosuke Esumi which is the leader of the Go-ongers.

The Boonboomgers are afflicted by a mysterious phenomena that leaves them apathetic, while Genba approaches Itasha of the Sunseaters with unknown intentions. Meanwhile, Cannonborg completes his secret weapon to counter Boonboomger Robo.

After Genba having successfully activated BoonBoom Safari, Ishiro and Mira pay a visit to an aquarium looking for inspirations to activate BoonBoom Marine, when the Sunseaters return with a fixed-up Boonboom Killer Robo, eager for a rematch.

Jou finds a monster created by the Hashiryan who refuses to attack humans and befriends him, determined to protect his new friend from the enemy.

The Boonboomgers meet Sakito Homura, a mysterious man who possesses the same powers as them, able to transform into Bun Violet and whose intentions are unknown.

Sakito makes an offer to Taiya to join the team. Meanwhie, Sakito's partner Byun Diesel is an old acquaintance of Bundorio and wants to meet him again, but Bundorio refuses and the past between them is revealed.

At the request of Hashiryan, Sakito sets out to eliminate the Boonboomgers. As he attacks, Taiya asks him, "Why did you abandon the Earth?" Will Sakito end up as an ally or enemy?

The time has come for Tanabata but the event brings bad memories to Bundorio. Meanwhile, the Hashiriyans send a new monster that brings Taiya into a pinch.

Mira's ex-boyfriend Norio unexpectedly reappears. And he is with the Hashiriyan for some reason!? Norio's "Wonderful Revenge Drama" begins in order to get his beloved Mira back from the Boonboomgers.

A series of unexplained fires have been burning down the town, and the people seem to be in trouble. Genba, who has become a "detective", deduces the cause.

The Hashiriyans send a monster who torment some children who are enjoying camping in the mountains, and the Boonboomgers field their new Boonboom Car to fight it.

Jou is training baseball with some children when the Hashiriyans attack them and an enraged Jou challenges the villains for a match, dragging the entire team, including Bundorio, Byun and Shirabe on it.

The Boonboomgers pay a visit to an after-school daycare facility where Taiya used to attend and learn more about his past, including his first love, when the Hashiriyans invade the place and put Taiya and Sakito to sleep.

A long time has passed since the Cannonborgs attacked Earth. Calling himself the modified captain, Cannonborg has tormented people. However, Daiya and his friends have thwarted all of his plans.

Shirabe is to explain the Boonboomgers to the head of ISA. Meanwhile, Taiya and the others have to fight a familiar Grumer. What's more, something extraordinary happens...!? The 3rd LAP is about to begin.

Genba becomes enraged with Disrace's arrival and decides to leave the Boonboomgers. In the occasion, the other members discover more about his past.

The team is distraught after Genba left and Jou decides to work even harder to make up for it.

Sakito and Byun help with Ichiro's spy job, while Taiya tells the others the story of how he and Ichiro met and became friends and Disrace uses his powers to revive Cannonborg as well.

The Sunseaters try to make Madrex recover his memories to no avail, while Taiya faces him in combat again.

Mira works part-time on a curry restaurant she has loved since childhood. However, when a rival restaurant opens and customers mysteriously disappear, she and the other Boonboomgers investigate if the Hashiryians are involved.

Genba challenges Disrace and is defeated. He is rescued by Akira Nijino of the ToQgers who helps Genba get back on his feet.

Genba decides to rely on his friends once again and rejoins the team. The Boonboomgers use their new invention to transform into their powered-up form, Champion Boonboomgers to confront Madrex who is under Disrace's control.

The Sunseaters blame the Boonboomgers for Madrex's death and attack them with their own version of the Boonboom Trailer. In response, the team fields their new vehicle, the Champion Carrier to stop them.

Taiya and the others are astonished upon discovering that Bundorio was once a Hashiriyan and Waruido's friend. As he tries to cope with his past, Disrace challenges the Boonboomgers for a decisive battle.

The threat of Disrace has passed, but the Hasiryan invasion continues. In the future, just like before, they will continue to fight every day, wearing two hats as heroes and part-time workers.

Ichiro meets another spy and old friend of his. In the occasion, Taiya discovers Ichiro's real reason to join the Boonboomgers and confronts him about his true allegiance.

The Sunseaters are astonished with the arrival of Weiwei Yarucar, an elite member from the Hashiryan who disbands the group. Meanwhile Spindo's right hand man, Grantu Risk, also arrives on Earth.

As ISA is making suspicious moves, Umesu Maimi, a classmate of Shirabe, returns to Japan. Reunited with her trusted classmates, Shirabe reveals the unrest in the upper echelons, but is simply laughed at. Where on earth does the truth lie?