The Vengeance Trilogy by Park Chan-wook

In Seoul, Ryu, a deaf worker has a sister who needs a kidney transplant. He tries to donate his own kidney to his sister, but his blood type is not compatible with hers. When Ryu is fired from Ilshin Electronics, he meets illegal dealers of organs, and the criminals propose that he give them his kidney plus ten millions Won to obtain a kidney suitable for his sister. Ryu accepts the trade, but he does not have money to pay for the surgery. His anarchist revolutionary girlfriend Cha Young-mi convinces him to kidnap Yossun, the daughter of his former employer Park, who owns Ilshin Electronics. However, a tragedy happens, generating revenge and a series of acts of violence.

Inspired by the manga of the same name and directed by Park Chan-wook, the film tells the story of Oh Dae-su, a businessman who is kidnapped one rainy night in 1988. Without knowing why, he spends the next 15 years locked in a cell with a color TV, while being drugged and tortured. Until one day, he is suddenly released and, ready for anything, he begins to search for answers to carry out his long-awaited revenge against those responsible.

Wrongfully accused of child abduction and murder, the angelic-faced single mother, Lee Geum-ja, is released from prison after thirteen long years. Hell-bent on taking her sweet revenge on the man behind the hideous crime, Lee hatches an infallible plan of retribution with the help of her cellmates; however, planning is easier than doing. Now--as Lee Geum-ja struggles to make amends with the daughter she was forced to give up--at the same time, she finds herself torn between her insatiable thirst for vengeance and the desperate need for atonement. Can she have both?