Against the background of resource depletion, Chengcheng has become the focus of competition among various countries, but 15-year-old Xu Anyuan just wants to escape the quagmire of his original family. The quota that was drawn and forced to be sent to Juncheng became a "cash cow" in the eyes of his family. Just when they were busy reselling the quota for profit, Xu Jingchuan appeared. This man in a black trench coat, ignoring the greedy faces of her family, took her away from the registration office and said, "I will be your guardian from now on", which rekindled the glimmer of light in her dying world.
Over the past seven years, Xu Jingchuan taught her to face the past and chase her dreams. As they got along day and night, she turned dependence into turbulent love. At the age of 22, Xu An was willing to muster the courage to confess, but due to the 14-year age difference, Xu Jingchuan pushed him away on the grounds that "you deserve better." In order to let her "let go of her obsession", Xu Jingchuan temporarily entrusted her to the care of Jin Cheng, who was familiar with her. But he never thought that Jin Cheng's twin brother Jin Yan would actually extend a sinful hand to Xu Anyuan.
Xu Anyuan, who was violated, collapsed completely and fled back to Xu Jingchuan immediately. This time, he could no longer pretend to "let go" and stayed with her day and night to help her get out of the shadows. The two finally broke through the worldly obstacles, made an engagement, and chose a wedding dress. Just when happiness was within reach, Xu Jingchuan, a diplomat, went to a war-torn area due to an urgent mission, and eventually died on a foreign battlefield. He never knew that Xu Anyuan was pregnant with their daughter. Many years later, Xu Anyuan stood in front of the tombstone with her daughter in hand, whispering about the promises that were too late to be fulfilled.
