Searching for a cure to Alzheimer's disease, a group of scientists on an isolated research facility become the prey, as a trio of intelligent sharks fight back.

Young couple Steve and Nell move into a once fashionable but now decaying apartment block in Hollywood, and soon realise that a number of young residents have met unusually violent deaths. Before long, Nell makes some disturbing discoveries about the building's manager and her fellow tenants.

Banks is a hit man, the best, usually working for Latin American drug cartels. He picks up solitary women, uses them briefly for a job, then kills them. He's in the Southwest, headed toward Mexico, when he picks up Bennie, a woman leaving an abusive marriage, going to Paradise, Arizona. The film follows three tracks: Banks's slow recruitment of Bennie, the set-up for the hit at a swank resort in Mexico, and the FBI's close pursuit of Banks, whom they want alive in hopes he'll rat out his bosses. Bennie may not be who she seems, and there may be a chink in Banks's tough-guy armor. Guns, money, and a chance at Paradise.

Searching for a cure to Alzheimer's disease, a group of scientists on an isolated research facility become the prey, as a trio of intelligent sharks fight back.