The Biggest Differences Between Oldboy And Spike Lee's Remake

There's no understating how upsetting the "Oldboy" climaxes are, in terms of subject matter. In the original, it is revealed that Lee Woo-jin was having a physical relationship with his own sister, which Oh Dae-su found about and told everyone — the shame of which caused her to take her own life and Lee Woo-Jin to set about his elaborate plot of revenge against Oh Dae-su. Part of that revenge was orchestrating a series of events that would lead him to unknowingly enter into a physical relationship with his own daughter. 

Some of that is carried over to the remake, specifically Joe and Marie's relationship and Joe spreading the word about an inappropriate physical encounter he accidentally stumbled upon. Only this time, the encounter was between a young woman and her father, who were revealed to be the sister and father of Adrian Pryce. It was then shown that Adrian also had a physical relationship with his father, though it is never said if the siblings also shared such a relationship with each other. Finally, when it seemed like too much of the outside world had learned of the family's secret, Adrian's father wound up taking the lives of his daughter and wife and attempted to take Adrian's life before finally turning the gun on himself. But Adrian survived his wounds, making it his life's mission to get even with Joe.

If you or anyone you know is having suicidal thoughts, please call the National Suicide Prevention Lifeline​ by dialing 988 or by calling 1-800-273-TALK (8255)​.