The Guava Academy, which seems to be no different from an ordinary school, is actually a place of crouching tigers and hidden dragons. It was invested and established by well-known educators and sponsored by powerful parents from all sides. The hardware equipment is complete and excellent. And the students who come here to study also have their own specialties. In the seemingly harmonious Guava campus, there is an "Ultimate Class" that gives the principal and the dean a headache. In the Ultimate Class, there is Wang Dadong (played by Wang Dongcheng), the class leader who ranks third on the KO list. The only thing Dadong fears is the class teacher Tian Xin, and the rest are ignored. At the beginning of the new semester, two new transfer students Wang Yase (played by Calvin Chen) and Ding Xiaoyu (played by Aaron Yan) were transferred to the class. Both of them are well-known figures on the KO list, which threatens the position of the class leader Dadong, so a duel unfolds between the three, and the three who don't know each other quickly become friends. Begin to accept the challenge from external evil forces... This is the first part of the "Ultimate Series" story.