Charts the scary adventures of callow, young singer Johnny, who's an aspiring rock star. His mother, a rock legend herself, abandoned Johnny when he was 3-years-old, and later became a recluse in an English castle, where--unbeknownst to him--Satan resides. He is summoned to the castle, after her death, in accordance with her wishes. Upon his arrival at the castle, Johnny is given a tour by the devil's right hand man, Mephisto. Once he gets to witness what fame could offer him, the devil presents Johnny with a contract; if signed it would offer him rock megastardom.