The moon in Qingwu Town is a cursed silver mirror. Every full moon, townspeople wake up before dawn and find themselves trapped in the skins of strangers - the blacksmith becomes a midwife, the teacher becomes a drunkard, and even a baby waiting to be fed may live in the body of an octogenarian. Only the librarian Shen Yan can stay awake in this absurd body-swapping game.
Until foreign reporter Lin Xia broke into the town, she not only broke Shen Yan's balance of keeping secrets alone, but also accidentally took over his body on a full moon night. When the consciousness of the sober person and the "intruder" collided in the same body, they discovered that behind this body-changing curse that lasted for hundreds of years, there was a truth about betrayal and redemption. And every exchange accelerates the countdown to annihilation of the town.
