Xu Niannian and Yang Yi met at the most beautiful time in their lives, sharing an unforgettable chapter of youthful love and growth.

When young crown prince Chu Ying ascends the throne, his childhood friend, the eunuch Xiao Man, is expelled from the palace. Years later, Xiao Man returns in disguise, and as they navigate court intrigues together, their bond deepens and begins to shift in unexpected ways.

Bao Yong, a former boxing champion, is now an unconventional high school homeroom teacher. To raise money for a student in need, he returns to the ring, partnering with Gao Hongde, who is running his boxing gym at a loss, to prepare for a prize competition. Meanwhile, the rebellious teenager Yang Fan accidentally discovers Bao Yong's secret. This battle of passion, responsibility, and growth in the ring has just begun...