Every Halloween night the monsters from the monster world are able to enter the human world. They must go back before sunrise or they will turn human. Thomas is prince of the zombies. He is looking for a husband to be his king. Newt is a regular human. He accidentally ends up in the monster world. Newt has to enter the human world before sunrise or else he will become a zombie. Newt must decide to either become a zombie and spend eternity with Thomas or stay in the human world and only see Thomas every Halloween. Newt wants to stay with Thomas but is he willing to become a zombie or will Thomas have to become human?