After visiting Monster Power Company, Mike (Dayan) made up his mind to study scare skills in monsters university and become a scare specialist in the future. Later, he got his wish and was admitted to monsters university. One night soon after school started, a huge monster named Sullivan broke into Mike's dormitory. At that time, Sullivan (Mao Guai) tried to hide the mascot of monsters university's rival Institute of Terror Science and Technology in his room, but he ran to Mike's dormitory by mistake (at that time, he climbed into the window).

This mascot later made them enemies. In the intimidation class offered by the college, the two compete with each other to see who has the better intimidation skills. By the time of the final exam of this course, something happened, so that both of them were expelled from the dean of Shenfen College and went to other colleges, and Sullivan was also expelled from his own club. In order to prove that he has the ability to be an excellent scare specialist, Mike was wrong when the dean fired him. He joined a second-rate monster club and took part in a scare contest with his teammates. But this second-rate monster's club is really short of players, and they need another player to reach the minimum number of applicants. To this end, Mike had to choose his sworn enemy Sullivan. At the contest registration site, he assured the dean that if he lost, he would leave monsters university. At the same time, the dean also promised him that if he won, he and his teammates could go back to Scare College. During the competition, Sullivan and Mike gradually untied the knot and became good friends. Monsters university stills atlas source