Nicky is an all-American kid who'd rather play heavy metal music in his bedroom sanctuary than climb the corporate ladder in his family's thriving business. Ruthless older brothers Adrian and Cassius are much more ambitious. When their ageing father decides to postpone his retirement, the sinister duo defects, leaving home, and setting up a shop in New York City. The old man is steamed but then, he has every right to be mad, he's the Devil himself. By making their hasty exit from Hades, satanic brothers, Adrian and Cassius freeze the gates of hell. With no more evil souls able to enter, their dad starts to fall apart, literally, an ear and a pinky are the first to go. It's up to Little Nicky to save him by finding his rotten brothers and bring them home before Dad wastes away. The problem is, the shy and introverted Nicky has never been to earth, in fact, he hasn't ever left his house...