Zheng Wei and Zhang Minghao were childhood sweethearts who promised to be together when they grew up but were separated soon after. Twenty years later, Zheng Wei mistakes Chen Jiahao for her long-lost childhood friend and uses her position as the wealthiest woman in the country to secretly support him. She plans to reveal her identity on their wedding day, only to be betrayed by Chen Jiahao. By chance, Zheng Wei ends up marrying a simple-minded man she meets on the street. To her shock, he turns out to be her true childhood sweetheart all along, Haohao.