 Fred hears from a telegram he inherits money and a mansion owned by his uncle Giggles Flintstone. Little he knew that he was crazy and exccentric. However, to inherit the money, he must spend a night at the mansion. But one clause makes shiver everyone: if Fred dies, the butler, the cook and the gardener gets his share. And this threesome have so much scary weapons that Fred and Barney must be at their guards all night long, and beware that "scary laugh"...