The title says it all. While walking down the street, Jung-yoon hears from a stranger, Joon-woo, “You will die in six hours." Joon-woo claims that the moment he saw Jung-yoon, he could see her death. Torn between doubt and unease, Jung-yoon spends the remaining six hours with Joon-woo. As they continue their journey together, it becomes clear that Joon-woo's foresight is not limited to Jung-yoon but is part of a series of unfolding events. As new aspects of Jung-yoon, Joon-woo, and Detective Ki-hoon, who is chasing the case, are revealed like turning over cards, the audience must deduce whether to trust Joon-woo and who the culprit of the case is. The film shifts direction sharply, passing the arrow of suspicion from one character to another as if handing over a relay baton. Will Joon-woo's premonition come true, or can death be prevented? The tension remains high until the very last moment.