Suspense novelist Lin Ye jolts awake in an unfamiliar apartment. His phone displays “Day 1” and a chilling text: “Follow the rules and survive until tomorrow.” Endless fog lies beyond the window. After witnessing a resident get “erased” for breaking a rule, he meets Lu Ze, who has experienced the loop before. Together, they discover that they are trapped in a “Ten Days to the End” time loop. Each cycle resets the space but preserves the traumatic memories. Anyone who fails to solve the mystery within ten days will be erased from existence. To break the loop and expose the truth behind the “god” controlling it, Lin Ye wields his “Memory Replay” ability and joins forces with Lu Ze, Su Qing, and their other companions. They face despair and battle threats such as mirror-image doubles and guardians of oblivion in ten uncanny settings, including the Fogbound Apartment and the Crimson Hospital. As they gradually piece together the fragments of the loop, Lin Ye must confront the hidden connection between his own writing and the cycle, embarking on a journey of redemption with his very existence at stake.