When Xu Feng, the wealthiest man in Jiangcheng, passes away without any heirs, his second wife, Su Qing, steps in as the interim president of his conglomerate. However, due to her humble background and being Xu Feng's second wife, the board members of the group refuse to acknowledge her and eye the Xu family's fortune with greed. To secure the Xu family's assets, Su Qing hires someone to pose as Xu Feng's illegitimate son. Coincidentally, Gao Yang, who looks exactly like Xu Feng, comes to the Xu family for help. Su Qing offers Gao Yang the role of the pretend heir, promising him unlimited spending during the contract period and a staggering reward of one hundred million yuan upon completion. Tempted by the lucrative offer, Gao Yang agrees and signs the contract, embarking on a one-month journey to experience life as a rich kid.