In a world where demons and angels are bound by strict rules, Azure Lao, a mischievous demon student, encounters a fragile glass fairy named Liuli. Despite tormenting her at first, Azure Lao gradually finds his heart softening toward the innocent Liuli. As their bond deepens, they uncover that Liuli is not a fairy but an angel, leading Azure Lao to face the ultimate sacrifice. This enchanting tale of love, magic, and self-discovery explores the boundaries between good and evil, and how love can transcend even the most unlikely circumstances.