Xia Yu Hao is a bit of a playful troublemaker in high school but is one day roped into the high-school volleyball team. There, he meets Qiu Zi Xuan, a senior and trainer of the team, and sparks start flying when the both of them clash. The two of them find themselves bonding over the sport and, as Yu Hao gradually discovers more about Zi Xuan, feelings start to develop. Can he keep his feelings to himself or will he end up crossing the line?