Wen Zhixia, an emergency doctor, persists on the edge of life and death, but his heart is closed due to emotional injuries. The parachute landing of surgical legend Gu Jingchen broke her peace. At work, the two are tacit partners, fighting death together; in life, he silently protects her and heals her past trauma. Faced with power disputes in the hospital and the shadows of the past, they supported each other and regained love and trust on the road of saving lives and healing the wounded. They finally realized that Bai Yueguang was not a regret, but a destiny of being late.