WhenhighschoolteacherNaAejoonshowsupforworkonanordinaryday,heneverexpectstobumpintohisfavoritecelebrityinthehallway.ButwhenhisschoolbecomesafilminglocationforashowstarringChoiSiyeol,hisbiasfromtheidolgroupA-One,thatDesperatetokeephisfanlifeasecret,Aejoonisforcedtoputhisactingskillstothetest,andnotjustoncamera.ButashespendsmoreandmoretimewithSiyeol,thedeceptionbecomeshardertokeepup.Nottomention,hemightnotbetheonlyonekeepingsecrets…