Ash, the sole survivor of The Evil Dead, returns to the same isolated cabin deep in the woods with his girlfriend, Linda. The two discover a mysterious tape recorder and hear the voice of Professor Knoby reciting passages from the Necronomicon, or Book of the Dead. Little do they know that the professor's words are powerful enough to invoke a spell that unleashes the spirit of evil alive in the remote forest surrounding them. When evil appears to get the upper hand it is left to Ash to don chainsaw and shotgun and rid the world of the demon spirit by dawn.