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 or lives will be lost.

The team discover a dark secret. The rising waters of the reservoir that flooded an ancient village called Syndercombe concealed a twisted, evil mind who took the opportunity to hide his dead.

But his evil didn't surrender when age robbed him of life and he's returned to the school, seeking new victims for his twisted desires.

If Lorne, Heather and Ella can't stop the rising evil in the reservoir then more than just the water will be polluted, the souls of the innocent will be lost to the bad waters of Clatworthy.