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The "Gear" is a component of the cogwheel system that belongs to the category of engineering mechanical devices (as in a clock). The possession of one indicates that the holder is enrolled in the Faculty of Engineering at the university. To obtain one, however, each and every incoming first-year engineering student must first go through the SOTUS (an abbreviation that stands for Seniority, Order, Tradition, Unity, and Spirit) system. One of the students in their third year, Arthit (Perawat Sangpotirat), regularly uses his authority over the first-year students inappropriately by pressuring them to engage in activities that are outside the school's policies. The students in lower classes, especially freshmen, are completely helpless when it comes to protesting or resisting any directives given by students in higher classes. Before Kongpob (Prachaya Ruangroj), Arthit appeared to be invincible. However, after Kongpob (Prachaya Ruangroj) intervened, Arthit was held accountable for his misdeeds. The two were initially hostile toward one another, but with time their relationship blossomed into something far more intimate.