On Christmas Eve, Finn Beckster (Christian Martyn), a little boy who loves video games, moves from California to a large historic house in the mountains of Maine with his father Mason (Peter DaCunha), mother Catherine (Ellie Harvie) and sister Elise (Jodelle Ferland). Finn has an overly rich imagination and is convinced that the house must be haunted by ghosts, which makes him feel anxious all day long. On Christmas Eve, his parents meet up for a Christmas party and leave the two little guys to look after the house. Finn sets countless traps to prevent ghosts from entering the house. At the same time, three thieves sneak into the house to find the treasures in the old house. A witty and interesting story begins...