Six guests are anonymously invited to a strange mansion for dinner, but after their host is killed, they must cooperate with the staff to identify the murderer as the bodies pile up.

Local legend tells of a ship lured on to the rocks of Antonio Bay being enveloped by a supernatural cloud as it sank; the myth says that when this mysterious fog returns, the victims will rise up from the depths seeking vengeance

A thick mist full of vengeful spirits haunts a prosperous island town off the coast of Oregon, as its inhabitants try to learn their town's dark secret in order to stop it.