Homeroom teacher Lu Qian awakens the Ultimate Teacher System, which allows him to stack learning buffs on his students. After taking charge of Class 7 in the second year of high school for just one month, he transforms an ordinary class into a gold-medal class. However, the parents believe he lacks experience and jointly pressure the school to transfer him to Class 25, the worst-performing class in the entire school. Once Lu Qian leaves, Class 7 loses its buffs and its grades plummet. In Class 25, he cleverly uses the system's cards to tailor his teaching to each student's abilities, uncovering the hidden talents of rebellious teenagers in esports, archery, basketball, magic, and more. He wins over the students one by one and leads the bottom-ranked class to a remarkable comeback. With his abilities, Lu Qian proves that there are no students who are naturally hopeless at learning, only teachers who don't know how to teach!