Kim Sun-woo is an enforcer and manager for a hotel owned by a cold, calculative crime boss, Kang who assigns Sun-woo to a simple errand while he is away on a business trip; to shadow his young mistress, Hee-soo, for fear that she may be cheating on him with a younger man with the mandate that he must kill them both if he discovers their affair.

A young man believes that his country's leaders are actually toxic reptilian aliens sent down to launch a takeover of his beloved Earth. So he decides to abduct them and force the truth out on camera in his basement that doubles as a film studio and torture chamber.

Brothers Jae-pil and Sang-gu move into their dream rustic-style house in the woods. When unwanted visitors arrive and awaken a sealed evil spirit in the basement, a dark aura begins to envelop the house.

With no clue how he came to be imprisoned, drugged and tortured for 15 years, a desperate man seeks revenge on his captors.