FAQ for
Oldboy (2003) More at IMDbPro »

The following FAQ entries may contain spoilers. Only the biggest ones (if any) will be covered with spoiler tags. Spoiler tags have been used sparingly in order to make the page more readable.

For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDb Parents Guide for this movie. The Parents Guide for Oldboy can be found here.

Oldboy is based loosely on the Japanese manga Old Boy, written by Nobuaki Minegishi and Garon Tsuchiya. Oldboy, the film, is the second installment of The Vengeance Trilogy, preceded by Sympathy for Mr. Vengeance and followed by Lady Vengeance.

No, the ending is totally different. There are new characters involved, and the ultimate cause for Woo-jin's revenge is not the same as in the movie.