Yu Wanwan and Xu Fan were childhood companions who started out fighting and eventually became friends, but they lost touch as they grew up. Years later, they meet again. Xu Fan, the male lead, is struggling to adjust to the psychological changes that came with retiring from the military. He grows curious about Yu Wanwan, whose demeanor in everyday life is completely different from the way she acts around her family.
To help Yu Wanwan overcome her depression and social anxiety, Xu Fan takes the initiative and invites her into his life. As he helps her recover from depression, he also finds a new direction for his own future.
