The Vengeance Trilogy (Korean: 복수 삼부작) are three films, Sympathy for Mr. Vengeance (2002), Oldboy (2003), Sympathy for Lady Vengeance (2005), directed by South Korean film director Park Chan-wook, which dealt with the themes of "revenge, violence and salvation".
This is the story of Ryu, a deaf man, and his sister, who requires a kidney transplant. In order to afford the transplant, Ryu and his girlfriend develop a plan to kidnap Park's daughter. Things go horribly wrong, and the situation spirals rapidly into a cycle of violence and revenge.
With no clue how he came to be imprisoned, drugged and tortured for 15 years, a desperate businessman seeks revenge on his captors.
After a 13-year imprisonment for the kidnap and murder of a 6 year old boy, beautiful Lee Guem-ja starts seeking revenge on the man that was really responsible for the boy's death. With the help of fellow inmates and reunited with her daughter, she gets closer and closer to her goal. But will her actions lead to the relief she seeks?