An average man is kidnapped and imprisoned in a shabby cell for 15 years without explanation. He then is released, equipped with money, a cellphone and expensive clothes. As he strives to explain his imprisonment and get his revenge, Oh Dae-Su soon finds out that his kidnapper has a greater plan for him and is set onto a path of pain and suffering in an attempt to uncover the motive of his mysterious tormentor.

After a thirteen-year imprisonment for the kidnap and murder of a six-year-old boy, Guem-Ja Lee seeks vengeance on the man truly responsible for the boy's death. With the help of fellow ...

A recently laid off factory worker kidnaps his former boss' daughter, hoping to use the ransom money to pay for his sister's kidney transplant.