Su Yan, the president of the Su Group, the top conglomerate in Binhai City, needs to solidify his marriage as soon as possible to preserve the inheritance rights of the family business because his grandfather is critically ill. Lin Wan, a jewelry designer whose family is in decline, urgently needs a huge sum of money to treat his seriously ill grandmother. The two signed a one-year hidden marriage agreement and started a cohabitation life where each takes what he needs.