Frank can't really explain why he has the words "Sex Machine" tattooed on his arm. In fact, he can't seem to remember much of anything about his life lately -- including why his head is throbbing, bleeding and wrapped in gauze. Seeking solace in the arms of his girlfriend, he sets out to find answers to a long list of troubling questions and, in the process, butts heads with a gang of deadly assassins and a vengeful mad scientist.