Su Jiahe was once the gentle and charming eldest daughter of the Prime Minister's household. But when her family fell into ruin, the entire clan was sentenced to execution. The only daughter managed to escape, though. Is Su Cheng really only a prime minister? Three years later, Mu Qinglan's return to the Prime Minister's residence throws the household into chaos. But her identity is exposed during a mission. Will he sell her out for power, or give up everything for her?