Lorne isn't convinced his new psychic detective agency is a good idea but when he receives a call from a boarding school, sat in the shadow of Clatworthy Reservoir he reluctantly agrees to help. The wisdom of teenagers has caused a problem at the school. The students decided the Ouija board they made in class might be fun to use, but when their call is answered, everything changes. The results have opened a door Lorne has to close...