Edward Carnby, the supernatural detective is back! And this time it's for revenge. Carnby's best friend Charles Fiske has been found dead on a mysterious island off the coast of Maine, Shadow Island. Carnby's investigation quickly leads him to Fred Johnson who informs him of Fiske's search for the three ancient tablets which, when placed in a specific location, will unlock an incredible and dangerous power. Johnson pleads with Carnby to pick up where Fiske left off and reopen the investigation in order to recover the tablets. Carnby accepts the mission to find and destroy the murderer of Fiske and avenge his death.