Lin Shuying, a high school homeroom teacher who died suddenly from overwork in her previous life, transmigrates into a novel as the vicious supporting female character's college counselor. The system requires her to reduce three male leads' affection for the green-tea heroine, Su Baiwei, to zero. Refusing to engage in rivalry between women, she wields the rules on attendance, academic credits, and merit awards, striking back with evidence at every turn. She exposes Su Baiwei for fraudulently obtaining financial aid, academic misconduct, skipping classes with her boyfriend, and spreading rumors about her. Gu Nancheng, Shen Qinghui, and Lu Ran gradually come to their senses, their affection for Su Baiwei drops to zero, and she is expelled from the university. After leaving school, Su Baiwei reinvents herself as an online victim to stir up public opinion, then sets her sights on Shen Zixu, who is involved in a university-business partnership, attempting to launch a fourth seduction route.