Han Soo-yeon is drowning in debt, her event planning business on the brink of collapse when an email changes everything: a temporary job as the fiancée of Seo-joon, a wealthy, cold businessman determined to grant his dying grandfather's last wish. The terms are simple—play the part of the devoted lover during the holidays and walk away with enough money to erase her problems forever. No love. No real emotions.
But in a world of twinkling Christmas lights, staged romantic gestures, and family gatherings, the line between performance and reality begins to blur. Behind Seo-joon's icy exterior is a man bound by duty, hiding wounds deeper than she imagined. As they exchange scripted kisses and whispered lies, Soo-yeon faces the most dangerous clause in their contract—the one that says she must not fall in love. Because some roles can't be left behind when the curtain falls.