The TV series "My Dearest" tells the moving story of two non-blood sisters. The elder sister is named Qiu Yu and the younger sister is named Qiu Mei. Due to their poor family circumstances, the two sisters work as entertainment performers in a song-and-dance troupe founded by a man named Ajun. The troupe has leased a small theater, but business has always been sluggish... One evening, the noise in the theater was almost suffocating. Although the leader Ajun was trying his best to liven up the place, and although the trumpeter Li Minghui was blowing his trumpet with all his might...