Little cat demon Shi Miao is sent to the human world by the Lord God with the mission of guiding the pitiful and powerful major villain Jiang Yingxu to complete the dark and tragic plot from the original book. Upon their first meeting, Shi Miao falls right into Jiang Yingxu's arms in the form of a cat. Believing the cold villain would discard him, he is unexpectedly tenderly and delicately raised by Jiang Yingxu, who suffers from "skin hunger". To better "supervise" the villain, Shi Miao transforms into human form and becomes his classmate. Through spending their days and nights together, Shi Miao gradually sees through Jiang Yingxu's true character and vows to protect him safely.