At 29, the aloof queen-style Lin Wan unexpectedly reunites with Gu Chen, the obedient younger brother who always followed behind her in childhood. Who would have thought that the clingy little boy of back then has now become a cold, domineering group executive. In public, he is calm, decisive, and radiates an intimidating aura; in private, however, he acts spoiled and shows weakness only to her, step by step luring her heart. Lin Wan originally thought she was in control of this ambiguous game, unaware that Gu Chen had already kept her in his heart for many years. He acts obedient, shows weakness, and gets jealous, all just to step into her life bit by bit. From timid probing to a mutual fall, the boy she once protected now only wants to become her sole exception and favorite. A sweet pursuit that began in youth and ends in heartbeat thus unfolds.