The premise is deceptively simple: Oh Dae-su, an ordinary man with a messy personal life, is abducted and held captive in a small, windowless cell for fifteen years with no explanation. One day he is released, given a few trinkets of information, and told to find his captor within five days. What follows is a relentless chase for truth, fueled by rage, bewilderment, and a mounting sense of dread. This structural simplicity is the film’s strength—it funnels the viewer’s attention into character and consequence, not plot contrivances.