A poltergeist is making life hell for a young family. When Charlie Alliss is called in to investigate, he is sceptical. But he gets more than he bargained for - the haunting is a loose thread in a pattern that has sent his partner Maddie to a psychiatric hospital, and involves a force which threatens far greater destruction. Charlie and his friends team up with a ghost hunter, a maverick physicist and the mysterious Yellow Room to eliminate the poltergeist and free Maddie from the entity tormenting her. In the process they discover that things are even worse than they seem. Charlie first disgraces himself, then picks a fight he can't possibly hope to win.