Shangguan Tianjun has been practicing in Tianji Mountain, a place outside the country since he was a child. What he has learned is not boxing or kicking skills, but the supreme way of manipulating the cause and effect of all things. At the age of eighteen, he was ordered by his master to go down the mountain to join the world and experience the world of mortals. His only mission is to find a "trouble" and solve it. When he first entered the bustling city, he was penniless, ignorant of technology, and made all kinds of jokes. By chance, he was taken in by Qin Zhixia, the female president of an entertainment company on the verge of bankruptcy, and became an "idle" that no one in the company could understand. Faced with the company's internal and external troubles, Shangguan Tianjun decided to solve the company as his own "trouble". So, he began to use his own set of mountain rules to modify the company's "line of cause and effect." An artist whose contract is about to be terminated tomorrow suddenly changes his mind; an investment that was supposed to fail unexpectedly comes back to life; an opponent who is always making things difficult for him begins to suffer misfortune for no apparent reason. Qin Zhixia and the company employees watched all this, from the initial shock to the gradual numbness. They began to wonder, what is the origin of this young man who looks a bit earthy and a bit stupid? In the process of solving the "trouble", Shangguan Tianjun discovered for the first time that the cause and effect in the world of mortals is far more complicated and interesting than the deduction of mountain cultivation...
