After graduation, Lu Qian becomes an intern head teacher of Class 7, Grade 2. On his first day on the job, he awakens the "Strongest Teacher System", giving students buffs to improve their learning efficiency and talent. Soon, the upper-middle grades of Class 7 advance by leaps and bounds, suddenly becoming a gold-medal class! But because the grade improvement was too effortless, the parents are unsatisfied, joining together to find the school administration and strongly demanding a change to a better teacher! Pressured, the school administration has no choice but to transfer Lu Qian to Class 25, the very bottom of the grade. Silently withdrawing all card buffs after leaving, Lu Qian sees Class 7 students' status instantly plummet, while Class 25's grades gradually march toward brilliance!