Coming home from a long business trip, Mr. Magoo inadvertently enters the deserted house next door- except that the house is not really deserted. The place is really a hideout for a group of counterfeiters. The crooks are not too thrilled with Magoo's intrusion on their racket, so they try to scare him off, disguised as ghosts. Magoo is unfazed by the bizarre events; his nearsightedness makes him think that the scare tactics are just the makings of a surprise birthday party.