Bud Spencer is, as always, getting into fights - especially after getting a job as sheriff. He's looking after a small boy who's actually an extraterrestrial with special abilities thus the military wants him. Bud's got his hands full.

Following the events of The Sheriff and the Satellite Kid, Sheriff Hall and H7-25 (using the official identity of Charlie Warren) still get no rest from the military: because the little alien has not yet grasped the meaning of keeping a low profile, they are constantly on the move, and H7-25's father has had to pick them out of a tight spot too many times already.