An unexpected reunion makes the calm and decisive group leader suddenly have a clever and spirited little girl appear in his life. As they get along, he gradually learns responsibility and care, and also begins to re-evaluate the low-key and mysterious woman behind the child. With the expansion of business cooperation, her hidden strength is gradually revealed, and two evenly matched powerhouses probe each other in confrontations, also building trust while breaking through predicaments side by side. The cute child becomes the most special bond between the two, making the originally tit-for-tat relationship quietly move toward tacit understanding and heartbeat.