Shen Zhiyu, who returned from studying abroad, bought a dying boy in the countryside at the age of twenty-three and named him Shen Zhao. She taught him how to read and reason and gave him a new life, but she always treated him like a brother and sister. In the past ten years, she used her identity as a professor as a cover to become an underground worker, while he was admitted to the police academy and grew up rapidly in the secret war. When her identity is exposed and danger comes, the young man in the past can already protect her behind her. Facing the flames of war, secrets and the gap of ten years of age, two hearts that dare not speak out gradually get closer in the test of life and death. This is a love affair in troubled times that begins with salvation and ends with each other, illuminating each other's life at dawn.
