《Ruyue Er Zhi》 revolves around a musical troupe.Singer Jin Xi decided to enter the musical stage after failing in cross-border acting, hoping to change the outside world's prejudices with his strength; his first examiner was gold medal director Ning Jin, who was very disapproving of idols' cross-border acting.

The strict requirements in rehearsals, the competition inside and outside the troupe, and the pressure of public opinion forced Jinxi to let go of the burden of being an idol.Ning Jin also re-examined her persistence while getting along with him.The two worked together to solve the crisis in the troupe and polish the play "A Chinese Ghost Story". After misunderstandings and running-in, they moved toward two-way healing.