Chen Yan, a 27-year-old information technology teacher at Linchuan International High School, possesses a Super Teacher System. With its assistance, he previously brought Class 5 of Senior Year from the bottom of the rankings to second place in the entire grade. However, during class, he confiscates student Lin Jing's phone to stop her from secretly arranging a date, only to be falsely accused by her of sexual harassment. Chen Yan produces their chat records to prove his innocence, but Lin Jing's mother, Tang Peiru, becomes furious and refuses to admit her daughter's wrongdoing, demanding that the school transfer him. Unwilling to let the matter escalate, Principal Wang Jianguo sends Chen Yan to Class 10 of Senior Year, the notoriously worst-performing class in the entire school.