Kong Baiguo, a thousand-year-old ginkgo spirit cultivating immortality, follows his instructions and assumes the identity of a teacher at Lingbao Middle School, where he must undergo tribulations, hoping to ascend to immortality after experiencing forty-nine trials. After just one week of teaching, he repeatedly summons Xu Jie'er, the mother of his student Dai Lingfei, to discuss her daughter's repeated violations of school rules for secretly bringing cosmetics to school. However, Xu Jie'er develops improper intentions toward Kong Baiguo, repeatedly flirting with and harassing him. After he rejects her advances, she maliciously spreads rumors, falsely claiming that Kong Baiguo sexually harassed her. She circulates the accusations online and incites public outrage, prompting large crowds of netizens to gather outside the school and surround it. Amid the controversy, the school and education bureau, pressured by public opinion, initially consider forcing Kong Baiguo to apologize and swallow the injustice just to put an end to the scandal. A fake disciplinary notice even emerges. Unwilling to accept being falsely accused, Kong Baiguo produces audio recordings and video evidence to prove his innocence.