For thirteen years, Nam Da Reum has been a dedicated fan of idol star Lee Chan. When she lands a job at fashion company APPELLO, she's shocked to find out that her beloved idol co-founded the company. Da Reum resolves to hide her identity as a fan and prove that she can be a professional. However, when she starts work, she's faced instead with workaholic CEO Kang Ha Gi, Chan's childhood friend. Meanwhile, Ha Gi seems to harbor hidden, unrequited feelings for Chan, and Chan struggles to maintain his public persona while dealing with a complicated personal life. As the three become entangled, Da Reum finds herself caught between her past obsession with Chan and a growing, unexpected connection with Ha Gi. 

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