In this funny homage to 1950s educational films, Lou is a teenager that has a very personal problem that prevents him from socializing with women.

After the lord of darkness decides he will not cede his throne to any of his three sons, the two most powerful of them escape to Earth to create a kingdom for themselves. This action closes the portal filtering sinful souls to Hell and causes Satan to wither away. He must send his most weak but beloved son, Little Nicky, to Earth to return his brothers to Hell.