One year before the Olympics, Chen Zheng retired due to injury and worked as a swimming coach in a small town. One day, when he was sorting out his old belongings, he discovered that the signature on the retirement application had been altered, and the access card record showed that someone had entered the archives without his knowledge. He decided to tear up his retirement application and return to the game. Starting from the local trials, he passed all the tests, but encountered the challenge of his former teammate Zhou Ye and the obstruction of the national team coach Fang Kai. With the help of reporter Su Wanqing and senior brother Lao Gui, he gradually approached the truth: someone had tampered with his injury report and retirement application just to make way for newcomers. However, the evidence was transferred at the last moment, alerting the opponent in advance. Chen Zheng must prove himself in the Olympic trials and at the same time find out who is behind the scenes.
