Hidden away in the Scottish countryside above Loch Ness, sits serene Devil's Ridge Manor. But its tranquillity is deceptive. For some time now there has been an increasing number of ghosts and supernatural phenomena at the manor. At the request of the famous physicist and owner of the manor Allister Mac Farley, private investigator Alan P. Cameron leaves his Chicago office for the mists of his ancestral land. Does the fabled sea monster play a part in the goings-on?

Confronted by strange phenomena, the player must help Cameron with his investigation, from the obscure corners of the Medieval castle, to the old scientist's secret laboratory and finally to the troubled waters of Loch Ness to solve the mystery.