There's a lot going on, so pay attention! You might have to watch it twice to get everything, but it's well worth it!
After a drunken night on the town, Oh Dae-su wakes up in the morning to discover he has been locked up, without explanation, in a mysterious prison - his home for the next 15 years. Suddenly, Dae-su finds himself freed, a voice on a cell phone taunts him into discovering who kept him imprisoned. Dae-su plunges into a world of competing vengeance, his own drive for revenge matched by the equally implacable and considerably more Byzantine scheming of his mysterious nemesis.