Yonghwa love seohyun for all his live. However his heart is shattered when he see seohyun kiss another guy. The heart broken yonghwa leave korea to tend his broken heart.However seohyun realized she love him when he is gone. But the flight yonghwa take involved in accident and yonghwa are dead and seohyun regret all his action to yonghwa. However at yonghwa funeral, seohyun got a chance to go back in time to safe yonghwa. However in this timeline there is no yongseo in wgm and yonghwa is in love with her unnie taeyeon. How seohyun will make him love her and save him?