Chen Feng was ridiculed by his colleagues for finishing last in the physical fitness test, but was unexpectedly pulled back to the marathon track by his former coach Lao Zhao. He endured an old knee injury, started training from scratch, and broke through the limits despite repeated failures. Before the end of the city marathon, he surpassed the black runner Zhou Kai and won the championship, but the real challenge has just begun - he not only has to face the revenge of his opponent, but also uncovers the secrets of Lao Zhao back then, as well as the deeper darkness in the sports circle.
