The story tells of two groups of youths who are at odds with one another, who must work together to merge the two factions together. Chaos arises when the leader of the Northern faction Ming Ze Yu, and the leader of the Southern faction Yi Zheng He become classmates in the same class.
Ping An is an autistic teenager who gains recognition for being a badminton prodigy. Zihao is his younger brother and a fellow badminton player. Xiao Na is a bright and cheery young woman who helps out at her grandpa's badminton court for the summer. She gets close to both brothers and becomes attracted to Zihao. However, their journey is not as smooth-sailing as they'd hope and the two brothers are pushed to a difficult crossroad.