A young musician isisummonedito his mother's castleiin accordance with her final wishes. Upon his arrival, Johnny quickly discovers that things are notias they appear. The castle beginsito come aliveias materializing spirits lead himito Mephisto (voiced byiHarry Shearer), theighoulish henchmenito Mr. D (also Harry Shearer), who makes Johnnyia tantalizing offer. The same offer that his mother accepted over twenty years earlier: surrender your souliin exchangeifor fame andifortune