Shen Nianci and her daughter had a car accident on the road, as a father, Gu Zekai chose to mobilize the whole city ambulance to save his first love back home. Under Shen Nianci's bitter plea, Gu Zekai still indulged in his first love's slander of Shen Nianci, and gradually killed his own daughter, which also became the trigger for Shen Nianci to leave Gu Zekai. When Gu Zekai lost everything at the hands of his first love and discovered the truth, he regretted it.