In a parallel present where the latest must-have gadget for any busy family is a 'Synth' - a highly-developed robotic servant that's so similar to a real human it's transforming the way we live.

An undercover police officer takes on the job of a specialist driver to investigate the dodgy dealings of a known pharmaceutical company, only to be faced with a completely unexpected outcome.

Madame Lu has created three "Death Machines," a trio of martial arts experts who have been injected with a special serum, turning them into mindless zombies, capable only of murder, at Lu's command. Tasked with eliminating her enemies, the Death Machines go on a blood-soaked rampage, killing anyone in their path. After they massacre an entire dojo, leaving only one survivor, the Death Machines and Madame Lu herself become the targets of his vengeance...

In San Francisco's Chinatown, a band of thugs kidnaps a girl for a large Chinese gang. Her half-brother gathers a team of expert fighters to get her back.