Deaf-mute Ryu (Shin Ha-kyun) has just been fired from his job in a Seoul, South Korea, factory, and the timing couldn't be worse. His sister (Lim Ji-Eun) is suffering from kidney trouble, and she needs a transplant that Ryu himself can't provide. Ryu and his girlfriend (Bae Doo-na) then kidnap the daughter of wealthy tycoon Park (Song Kang-ho) to raise the money, but an unexpected disaster strikes, and Park launches a bloody quest for revenge that leaves many dead and puts Ryu's life in danger.