On a winter night in the capital, thirteen-year-old Shen Yan, the young princess of the Shen family, unexpectedly meets fifteen-year-old Ji Yan, heir to the Ji family, at the Cloud Summit Club, where the city's top financial dynasties gather. Sweet and innocent, Shen Yan takes the initiative and strikes up a conversation. Ji Yan, cool and dignified, feels his heart stir. The two hit it off at once, and beneath the moon they promise to meet often. Ji Yan quietly vows to protect her for the rest of his life.
After the gathering, the Shen family is suddenly wiped out in a horrific massacre. Every member is killed, and Shen Yan vanishes without a trace, neither alive nor dead. Overnight, Ji Yan loses all word of her. That warm first meeting becomes the last time they see each other in the light.
Years later, Ji Yan holds the reins of the Ji family and commands immense power, yet he has never stopped searching for Shen Yan. As he investigates the truth behind the Shen family's massacre, he scours every corner of the country for clues. He turns his longing into an obsession and vows to find the girl who disappeared from his youth, no matter how long it takes. Shen Yan, who escaped death and changed her identity, is also drawn by fate into meeting him again. Together, they uncover the conspiracy behind the massacre, make up for the long years they lost, and continue the love they were too young to finish.
