Wu Xiaoman, a small person who delivers couriers, accidentally obtains the true soul of wontons in a meteorite rain from outside, and becomes involved in the catastrophe of heaven and earth and the dispute between demons and monsters. From an ignorant boy to a nonsensical hero, he, together with the clever heroine Su Ling'er, the sword fairy Jiang Qiubai, and the greedy pet Cauliflower Great Fairy, traveled through the three realms, wandering between good and evil, and were gradually involved in the vortex of fate in the six realms. The three people and one beast are constantly complaining and full of fun. From handling cases and running errands to stirring up troubles, in a journey that is chaotic, touching, absurd and growing, they achieve self-transformation and reveal the ultimate mystery behind Tianwai Wonton. The book has a three-volume structure, with ups and downs, echoing back and forth, and coexisting passion and relaxation; a super counterattack legend is written in the midst of hilarious decisions.