In the mysterious and vast fantasy world, Ye Xiaodou laughs at himself and enjoys himself in the bottom of the city. A sudden encounter allowed him to obtain a strange spiritual beast, a small spirit rat, and get acquainted with Guo Pengyue and Chu Yun'er, who have very different personalities. Three people and one beast fight wittyly and solve puzzles with humor, and are involved in Bo Yun's treacherous battle among Jianghu immortals. When the protagonist faces "tricks of fate" time and time again, he uses optimism and self-deprecation to overcome difficulties together with his friends, and gradually grows into a hero who can take on great responsibilities. The book is humorous and light, and friendship runs throughout. There are both jokes and growth. In the end, the protagonist saves the world in a smart and funny way, leaving a heart-warming ending.
