10-year-old Finn is terrified to learn his family is relocating from sunny California to Maine in the scariest house he has ever seen! Convinced that his new house is haunted, Finn sets up a series of elaborate traps to catch the âghostâ in action. Left home alone with his sister while their parents are stranded across town, Finnâs traps catch a new target â a group of thieves who have targeted Finnâs house.