Sunwoo is no ordinary hotel manager. He is also the ruthlessly efficient right hand man of underworld boss, Kang. But tough guy Kang has a weakness; his young girlfriend. Suspecting she's unfaithful, Kang orders Sunwoo to take care of the problem. When Sunwoo discovers her with another man, he uncharacteristically grants them mercy. Kang is furious and orders his gang members to hunt down Sunwoo. With nerves of steel, Sunwoo battles the gang alone. With each kill, he takes one step closer to his final confrontation with Kang.