Intrepid Japanese detective Maiku Hama is on the case in this adventure, the first of a three part comedy series. Like the Western detective character he is based on (Mike Hammer, get it?), Hama is suave, macho, and cold. Unlike his American counterpart, Hama is a total klutz. His attempts at machismo always fall flat. When he is on a case he spends more time getting beaten up than he does solving it. Hama works out of a projection booth in a Yokohama movie house. Before his clients can see him, the theater owners make them buy tickets. During his first on-screen case poor Hama must protect a Taiwanese waiter from an irate customer in a mah-jong parlor. He tries hard but ends up getting his finger cut off. He then must pry it from a dog's mouth so it can be reattached. Later the waiter hires him to locate his estranged brother. Hama takes the case and finds himself smack in the middle of a Japanese and Chinese mob war.