In a dark and lonely city, a man named Oh Dae-su is kidnapped and confined in a mysterious room for 15 years without knowing why. During his captivity, he becomes an expert in television and obsessed with the idea of revenge. One day, he is suddenly released without any explanation. Confused and filled with bitterness, Dae-su sets out to discover who imprisoned him and why. Equipped with nothing but his survival instinct and a fierce desire for vengeance, he begins to rebuild his life and search for his captor.
As he follows the trail of his enemy, Dae-su meets a young woman named Mi-do, who becomes his ally and potential love interest. Together, they explore the dark and twisted secrets surrounding his past. Rituals of vengeance and philosophy intertwine as Dae-su confronts his captor in a psychological game of cat and mouse. The intriguing plot takes unexpected turns, delving into themes of pain, redemption, and the impact of past decisions.
With striking visual aesthetics and a narrative that challenges reflection, Dae-su is pushed to his limits, facing not only his captor but also the consequences of his own actions. In a shocking climax, Dae-su discovers a truth that will change his life forever, leading him to heart-wrenching revelations about love, revenge, and the hidden truth in the shadows of his memory.