Yoo Eun-ho, a single dad armed with perfection, becomes the secretary of Kang Ji-yun, the CEO of a popular headhunter company, who doesn't do anything except work.

The 1950s were an era filled with desire and aspiration, despite the aftermath of the Korean War. Jeongnyeon, a girl with a gifted voice, embarks on a journey to become the best actor of gukgeuk, or Korean female classical opera, where she encounters competition, solidarity, and growth.