This movie combines both comedic moments of chaos around a bomb threat with heartwarming scenes that explore the Nohara Family's relationship with their beloved pet, Shiro. Additionally, musical interludes are sprinkled throughout. When the family vacations in Okinawa, Shiro unwittingly ends up with a hazardous flying saucer mistaken for a bomb dropped by the "Only Buttocks Aliens," a threat that could destroy the Earth. While the space survey center "UNTI" tries to retrieve the bomb, an extremist group of female terrorists called the "Hinageshi Opera Company" thwarts their efforts, endangering the planet.