Special agent Frank Castle (Tom Jane) lives the good life with a devoted family and a job he loves. But his world falls apart when his last assignment pits him against ruthless businessman Howard Saint (John Travolta). Seeking the revenge of his murdered family, Castle becomes a merciless vigilante hell bent on destroying Saint and his band of underworld assassins on his mission of redemption: vindicating the common man with a brand of justice the law cannot provide.