外星生物在加州沙漠杀死一种变异的外星生物。它的遗骸，以及意外落下的高科技激光枪和电源，都是被一个被排斥的青少年发现的。然而，电源也导致了这名少年的变异，他开始了凶残的横冲直撞。

George has been in a mental hospital for 3 years and is finally ready to go out into the real world again. Eddie Dash, a dedicated con-man, is supposed to keep him out of trouble, but when people begin to recognise George as a missing millionaire, Eddie wants to take advantage of the situation.

An adaptation of Francis Ford Coppola's The Godfather and The Godfather: Part II, re-edited in chronological order with additional footage not seen in the first two films added.

故事发生在现在的布鲁克林，警察吉诺（西格饰）出生在这里并在这儿长大，他目睹了这里一切的变化，但是，有一点是他无法容忍的。吉诺少年时斯的死对头李奇选择了一条和他相反的道路，把整个街区变成了杀戮战场，他像一只挡不住的疯狗，到处杀人，并当街杀死了吉诺的好友，吉诺愤怒无比，决定不惜任何代价将李奇绳之于法，于是一场惊心动魄的追捕展开了。