Taiya Hando is a courier who befriends an alien machine life form named Bundorio Bunderas, helping him develop equipment for an important intergalactic race known as the "Big Bang Grand Prix".

But when Earth is invaded by a criminal group known as the Hashiriyan, Taiya recruits two new members: Mira Shifuto, a girl who becomes involved with them after they rescue her from an unwanted marriage, and Jyo Akuse, a police officer who serves as the group's liaison with the authorities, most notably Shirabe Saibu, member of the International Space Agency (ISA) who becomes their main contact.

The assembled Boonboomgers balance their lives between accomplishing missions from various clients and fighting off the Hashiriyan, later gaining the assistance of the interstellar traveler Sakito Homura and his alien companion, Byun Diesel, and the occasional help from members of other Super Sentai.

[3] An online production announcement conference introducing the main cast and characters and the artist for the show's ending theme song was held on February 18, 2024.

Puromisu Za Sākitto) is a film released in Japanese theaters on July 26, 2024, double-billed with Kamen Rider Gotchard: The Future Daybreak.