The story follows Jang Star, a superstar admired for her beauty and angelic personality. However, Haneul, an unemployed young woman, discovers that the reality behind that image is very different: Jang Star can be a real "devil." Everything changes when Haneul unexpectedly gets hired as Jang Star's new manager. What begins as a chaotic professional relationship gradually transforms into something deeper: a genuine love amidst the chaos of fame. But not everything is glamorous in the world of show business. As their bond strengthens, jealousy, rumors, and a hidden threat test their relationship. Haneul vows to protect Jang Star, no matter the cost.