Gu Xuan picked up a "cat" that came from a book, and learned about his own life experience in the process of taming the black cat. Little did he know that in the process of learning about his life experience, the black "cat" was also exploring the truth of the world step by step...
In fact, it is a monster that looks like a black cat and fell into a seemingly normal but weird world. Starting from wanting to return to the original world, the monster Nanke followed Gu Xuan and gradually explored Gu Xuan's true identity and the connection between this world and Gu Xuan. He had a different purpose, but he fell into it step by step...