Intern teacher Lu Qian is questioned by parents of the elite class and forced to switch classes, turning instead to take over the school's bottom-ranked "underachiever class." Using his unique "strength-supremacy" approach, he successively wins over unruly students, teaches according to their aptitude with clever methods, not only propelling the whole class's grades forward by leaps and bounds but also uncovering various talents such as archery and magic. After changing teachers, the original elite class's performance plummets drastically, while the members of Class 25 unite as one to make a comeback, fiercely slapping the doubters in the face with their strength, staging a passionate and heartwarming campus growth counter-attack.