On the eve of the finals of Qinglan City's Workers' Athletics League, a key runner is unexpectedly injured and forced to withdraw. Cheng Ye, a substitute who has spent years sitting on the bench, is called upon in an emergency and thrust into the decisive final leg. Facing widespread doubts and formidable opponents, he feels the immense pressure. With the trust and support of his coach and teammates, he tirelessly perfects his baton exchanges and sharpens his sprinting rhythm day and night. On the final track, he executes an exceptionally smooth handoff and an explosive sprint to achieve a stunning comeback, leading the Flying Speed Team to victory and finally proving his worth after years as a substitute.