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Sayoko is desperate to bear a child of her own, but her live-in boyfriend Shinsaku strenuously objects to the idea. One day, someone leaves behind a six-year-old child at their door, claiming that Shinsaku—or four other men—is the child's father! Sayoko and Shinsaku set out on a journey to find the real father.
Based on the comic book series of the same name by Yûsuke Aoyagi.
A plot by an evil mastermind to eliminate the lead singer of the Japanese "Group Sounds" rock band, The Jaguars, leads the group through a series of psychedelic, comedic escapades.
