Duan An, the Great Zhou dynasty’s notorious good-for-nothing prince, spends his days fighting crickets and chasing dogs. His schoolwork is a disaster, and court officials mock him as a rotten log. One day, he unexpectedly awakens the “Life-Swap System,” which lets him exchange bodies with all kinds of people in the capital. Today he is a top scholar from a poor family, studying day and night; tomorrow, the son of a wealthy merchant; he can even briefly experience life as a chancellor with power over the entire court. Yet every swap brings secret interference from a maddeningly jealous antagonist: his elder brother, Zhao Heng. Zhao Heng sees Duan An as a thorn in his side and lays traps at every turn to ruin his reputation. With each change of identity, Duan An uses modern thinking to resolve countless crises, while his carefree, underachieving attitude helps heal the anxiety of those around him. From the bustling streets to the imperial throne room, Duan An gradually learns the art of governing amid one hilarious daily mishap after another. In the end, his unique “good-for-nothing wisdom” wins the people’s hearts, leaves the jealous humbled, and ushers in an extraordinary age of prosperity.