In Manhattan, the aspirant writer Jabez Stone is a complete loser: he is not able to sell his novels, he lives in a lousy apartment and he does not have success with women. When one of his friends Julius Jenson sells his novel for US$ 190,000.00 to an editor, Jabez fells envy and promises to sell his soul to the devil for success and accidentally kills a woman with his typing machine. The Devil knocks on his door, fixes the situation and seals a contract with Jabez. His low quality novels have bad reviews but become best-sellers; Jabez enriches; has success with women, but has no time for his friends. Jabez meets with the publisher Daniel Webster who offers him a chance to break the contract with the devil.

Instead of flying to Florida with his folks, Kevin ends up alone in New York, where he gets a hotel room with his dad's credit card—despite problems from a clerk and meddling bellboy. But when Kevin runs into his old nemeses, the Wet Bandits, he's determined to foil their plans to rob a toy store on Christmas Eve.

A publishing executive is visited and bitten by a vampire and starts exhibiting erratic behavior. He pushes his secretary to extremes as he tries to come to terms with his affliction. The vampire continues to visit and drink his blood, and as his madness deepens, it begins to look as if some of the events he's experiencing may be hallucinations.