Tetsu, the owner of Black Jack's favorite cafe, tells the story of how he was a famous pickpocket chased constantly by a police detective. The detective desperately wanted to catch Tetsu red-handed, but during a chase, Tetsu is injured in an accident involving sheet glass and loses two fingers. The detective blackmails Black Jack into performing surgery to reattach them, hoping to continue as before, but Black Jack covers for Tetsu, and in the episode Tetsu returns the favour when the detective tries to arrest Black Jack for unlicensed practice.