Life is harsher when Ryu's older sister suffers from kidney failure. The only method that can save lives is a kidney transplant. Ryu asked the doctor to transplant his kidney to his sister, but the two are not blood compatible.
Because he wanted to save her, he followed the temptation of the organ traffickers. Ryu's foolishness caused him to be deceived, giving money but not receiving a kidney to operate on her sister.
Too needy, Ryu listens to his girlfriend (played by Bae Doo Na) and kidnaps the only daughter of the factory director (Song Kang Ho). It was also from here that tragedy occurred that resulted in 13 deaths from bloody revenge.
Along with Old Boy , Park Chan Wook's revenge series has created a great resonance on the Asian screen in particular and the world in general.