影片将浮士德的故事加以变奏，放入巫术、谋杀和异国风情等作料，泡制成一部典型的惊栗恐怖片。故事背景是美国西方的新奥尔良市，当地正举行热闹的狂欢节，却出现了一名恐怖的连续杀人狂。这名男子将灵魂出卖给魔鬼，总是在狂欢节的最后一天行凶，警探逮住了他的肉体，但却被附在他身上的魔鬼纠缠得苦不堪言。于是警探向一名女巫师求救，而他的上司也发现了去年发生的狂欢节凶杀案与此有关的线索，于是他决定向恶魔反击，但却危害到他的前妻和新交的女友性命不保。与莱斯利-安．唐则饰演警探透纳和他的前妻。
A man sells his soul to the devil and shows up on a killing spree at Mardi Gras in New Orleans. Leaving a trail of bodies, the apparently indestructible demon challenges the detective to stop him by the end of Mardis Gras or lose his soul. With help from a voodoo lady and his police captain, who remembers the demon from a past Mardis Gras, he gets closer, but risks the destruction of his ex-wife and newly found girlfriend.
