Alain Moreau's investigation into the death of his identical twin brother leads him from the beauty of the south of France to the mean streets of New York City and into the arms of his brother's beautiful girlfriend. Pursued by ruthless Russian mobsters and renegade FBI agents, the duo race against time to solve his brother's murder and expose an international conspiracy.

A criminal psychologist loses his arm in a car crash, and becomes one of three patients to have their missing limbs replaced by those belonging to an executed serial killer. One of them dies violently, and disturbing occurrences start happening to the surviving two.