On Christmas Eve 1950, Wilfred Butler dies in a burning accident outside his mansion in East Willard, Massachusetts. The residence is bequeathed to his grandson, Jeffrey. Twenty years later, lawyer John Carter arrives in East Willard on Christmas Eve with his assistant and mistress Ingrid, having been charged by Jeffrey (now registered as a patient in a mental asylum) to sell the house. The house, the town, even Jeffrey himself — all hold dark secrets that will be brought to light.

Captain Caveman is the titular hero of the cartoon series of the same name, he is a caveman brought back to life in the modern age who fights crime and injustice with the aid of his band of female friends: he is armed with a large club and is famous for his battle-cry of "CAPTAIN CAVEMAN!".

Snagglepuss no sooner hears a police report that Mugsy, Public Enemy Number One, is at large when Mugsy and fellow ruffian McGoofy enter Snag's house. Snagglepuss hides in the closets, disguises himself as a lion rug and tries other ruses to avoid detection.