"Oldboy" tells the story of Oh Dae-Su (played by Choi Min-sik), a wealthy businessman who is kidnapped and held captive in a mysterious room for 15 years. The captor's identity and motives are unknown, and Oh Dae-Su is forced to live in isolation, with his only source of information being a television and a mysterious voice from the outside. After his sudden release, Oh Dae-Su sets out to find his captor and exact revenge. However, as he digs deeper, he uncovers a complex web of secrets and lies that lead him to question his own sanity.
For purists who want the highest quality audio without streaming compression, physical media is the most reliable option. The 2005 and certain Arrow Video Blu-ray releases include the English dub as a selectable audio track. Why You Rarely Find a Standalone Audio Download
While the convenience of an English dub is understandable, Oldboy is a film heavily reliant on vocal performance. Choi Min-sik delivers one of the most iconic performances in cinema history. The desperation in his voice during the "hallway fight" scene or the guttural scream upon learning the truth carries weight that the English voice actors have struggled to replicate.