James Phillips

Deep within the woods and canyons of California, four teenagers happen upon an ancient book containing the secrets of a strange, malevolent world that coexists with that of mankind. This film was re-editted with additional footage and released as Equinox (1970).

Some punks go into a small town and start hassling the gas station owner; Billy Ray Dalton a friend of the owner pulls a shot gun on them and tells them to go away. Later they go back and force the owner to tell them where Dalton lives. Now, Dalton a part time musician's out on a gig, when they go to his house and kill his pregnant wife, and take his daughter. Dalton follows them to try and get his daughter back.

Quatre amis sont attaqués par un démon lors d'un pique-nique, en raison de la possession d'un tome de l'information mystique. Raconté en flash-back par le seul survivant.