Humans versus vampires. In a dark futuristic metropolis, humans are fighting a civil war against a subculture group of humans known as "hemophages." Genetically modified by a vampire-like disease, these outcasts pit their great speed and strength against the humans' relentless weapons in the gritty urban streets. Violet is an infected person, a beautiful, intelligent woman who possesses razor-sharp survival instincts. Caught up in the middle of this escalating conflict, Violet must protect an extraordinary nine-year-old boy named Six. While the vampires and humans seek to use the boy's unique genetic makeup to eliminate each other, Violet has no idea of his terrifying secret-- one that can destroy both races...