Fresh from the killing fields of Southeast Asia, John Rain works as a bagman under the watchful eye of his CIA handler, delivering cash to corrupt elements of the Japanese government. But when a delivery goes violently wrong, Rain finds himself in the crosshairs of Japan's most powerful yakuza clan. To survive, Rain strikes a desperate deal with his handler: take out a high-profile target in the Japanese government in exchange for the Intel he needs to eliminate his would-be executioners.