"Do you remember your first moment being alive?"

 The story of a woman who devoted her life to love and a man who had never known nor believed in love. Yu Dalgi was a woman who previously believed in sacrificing herself for love, even sacrificing her public image as an announcer to save her first love, Hwang Yumin, but was in turn betrayed when her best friend, Lee Gayeon, seduced Yumin. Since then, she had become jaded and resolved to distance herself from relationships, until she met Park Chanyeol, a man who had built a wall around his heart in fear of being hurt again. She becomes his fiance overnight in order to stop a more sinister plot at hand.