Su Luo, the illegitimate daughter of the Prime Minister, and Xiao Heng, the reigning Emperor, unexpectedly switch souls. The Emperor finds himself trapped in the Prime Minister's residence, where he must deal with conflicts within the household, while Su Luo takes his place in the imperial palace and faces the affairs of the royal court. Forced to experience each other's entirely different lives, the two find themselves caught up in numerous hilarious and absurd situations. As they resolve one crisis after another, they gradually set aside their prejudices, come to understand each other, and join hands to find a way to return to their own bodies, ultimately forming a genuine bond.