Soon after an ancient talisman is smuggled out of Hong Kong, a container ship filled with Chinese refugees runs aground on Alcatraz. The crew have all been murdered.

The Chinese Triads suspect one of their own, a female assassin named Sally known to have a complex relationship with a San Francisco detective named Cape Weathers. But when Sally goes missing, Cape becomes the focus of the Triads' attention, and soon the police and FBI have him on their radar too.

Cape quickly realizes he needs to get to the bottom of what really happened on board the ship, or else face killer consequences.