Kang Yira has the perfect high school life, beauty, popularity, and a boyfriend everyone envies. But when she catches him cheating, her flawless image shatters. Desperate to save face, she impulsively asks the quiet and cold Kim Seungmin to be her fake boyfriend to make her ex jealous. What starts as a simple agreement, no feelings, no complications, slowly turns into something neither of them planned. Between staged dates and whispered rumors, Yira begins to see the real Seungmin beneath his icy exterior... and he starts caring more than he ever meant to. Now, Yira must choose between protecting her pride or risking her heart for something real.