The orange cat "Yugan" that Lin Xiaomi, an ordinary office worker, had adopted for three years suddenly turned into a man named Jiang Xiaoyu. From then on, her life was turned upside down. Not only must he teach this "cat boyfriend" the rules of human society, but he must also avoid being hunted by a mysterious organization called the "Pure World Society". As the adventure deepens, she discovers that Jiang Xiaoyu hides the ancient secrets of the "Night Watch" clan, and she herself is unknowingly involved in a crisis concerning the balance of the two worlds.
