The day 28-year-old programmer Lin Mo was laid off, he received a mysterious text: "Today's save point has been established." That night, his drunk-driving truck struck his girlfriend, Chen Xi. When he opened his eyes again, he was back on the morning he was called in to meet with HR. Nothing had happened yet.
From then on, Lin Mo could "rewind time" once a day, correcting every bad decision. He predicted stocks hitting their daily limit, turned the tables on workplace bullying, and rebuilt his life with an all-seeing perspective. But just as everything was going his way, he discovered that every rewind cost him a piece of his memory, while the sender of the mysterious text was using his life for a dangerous experiment.
Even more terrifying, the person closest to him seemed to have known everything all along. As his save points began to expire and the truth came to light, Lin Mo finally understood: what seemed like a second chance wasn't a gift from time, but punishment for a coward. The real deadweight wasn't the employee who got laid off, but the person he was who didn't dare face failure.