10 years ago the perverse Dr. Russell couldn't resist the beauty of a young patient in his mental clinic and raped her one night. When she plunged herself from the roof shortly after, he described it as consequence of her heavy depressions. Now the same urge overcomes him with his new patient Sandy. He doesn't know that she's the daughter of his previous victim and that she's come for revenge.
A lifetime of taking shots has ended Rocky's career, and a crooked accountant has left him broke. Inspired by the memory of his trainer, however, Rocky finds glory in training and takes on an up-and-coming boxer.
Ten years after a band of mercenaries first battled a vicious alien, the invisible creature from another world has returned to Earth -- and this time, it's drawn to the gang-ruled and ravaged city of Los Angeles.