WhenhighschoolteacherNaAejoonshowsupforworkonanordinaryday,heneverexpectstobumpintohisfavoritecelebrityinthehallway.ButwhenhisschoolbecomesafilminglocationforashowstarringChoiSiyeol,hisbiasfromtheidolgroupA-One,that'sexactlywhathappens!Ifthat'snotenoughtogiveafanboyaheartattack,SiyeoltakesaninterestinAejoonandaskshimtojointheshowashis"co-teacher."Desperatetokeephisfanlifeasecret,Aejoonisforcedtoputhisactingskillstothetest,andnotjustoncamera.ButashespendsmoreandmoretimewithSiyeol,thedeceptionbecomeshardertokeepup.Nottomention,hemightnotbetheonlyonekeepingsecrets…
玉真旭,姜熙,申知原
金施恩,车璌河,金敏娥,金到建
车珠英,李贤旭,李星民
沈利煐,宋昌义,崔贞允,郑英燮
朴荷娜,朴尚南,金史权,李妍度,朴真熙,李垠亨
罗映姫,池秀媛,金惠玉,崔钟焕,韩可露,崔尚（최상）,朴利媛（박리원）,权道英（권도형）
李惠利,郑秀斌,姜惠元,吴友利,崔荣宰,金太勋,刘贞莱
严志媛,安在旭,李必模,崔大哲,金烔完,尹博,李锡基,박준금,裴海善,朴孝朱,刘仁英,金承允,申涩琪,金俊裴,尹俊源
裴仁赫,金智恩,郑干柱,朴宰灿
李敏镐,孔晓振,吴正世,韩智恩,亚历克斯·哈夫纳,李艾,金周宪,朴真珠,金应洙,李初熙,BarriTsavaris
