The film's story begins when Shiriri, an alien, arrives and turns Hiroshi and Misae into children. To turn them back, Shinnosuke must travel the length of Japan with Shiriri hidden in his butt. Meanwhile, Shiriri's father is moving forward with a huge conspiracy. (Source: ANN)

The film's story begins with Shinnosuke and his friends of Kasukabe Defence Force experiencing a one-week stay in Tenkatōitsu Kasukabe Private Academy (nicknamed Tenkazu), an elite boarding school that is administrated by a state-of-the-art AI, Otsmun. All the students are given a badge initially with 1000 points and their points are increased/decreased by Otsmun based on their behaviors and academic performance. In there someone attacks Kazama. As a result, his intelligence is reduced, and strange bite marks are left on his butt. The Kasukabe Defense Force joins forces with the school's dropout student council president Chishio Atsuki, who was a former athlete, to form a group of detectives and solve the mystery. (Source: Wkipedia)

Comical action spy film including an indecent material (flatus) and a story of a girl who had obeyed her parents, but becomes self-aware. A mystery spy girl Lemon Sunomono suddenly appears in front of Shinnosuke, and she calls herself an emissary of Action Kamen. She had trained as a spy by her parents in the Sukashipestan Republic, and works for the Queens. Under her guidance, Shinnosuke decides to be a spy to fight for justice, and receives spy training. Under the instruction of Action Kamen, Lemon and Shinnosuke perform a mission to creep into the laboratory in the Hedelna Kingdom and recapture a capsule from an evil professor, but Lemon finds the real purpose of the Queens, and they fight to foil the plot of the Queens. (Source: Manabu Tsuribe)

A slapstick comedy on a bomb uproar, and a touching story about the ties between the Nohara Family and their dog Shiro. A film in the musical style including the scenes with inserted songs. When the Nohara Family enjoy a trip to Okinawa, a strange object like a flying saucer becomes stuck with Shiro's bottom. That is a special bomb dropped by The Only Buttocks Aliens, and it has the power to destroy the whole earth. The space monitoring center UNTI (Unidentified Nature Team Inspection) begins to pick up the bomb, but a female terrorist group Hinageshi Opera Company tries to get the bomb and disturbs UNTI's work. (Source: Manabu Tsuribe)