Honest employee Chen Gang is repeatedly bullied by supervisor Liu Wei, who not only forces him to advance over ten thousand yuan for meals, but also defrauds him of his reimbursement vouchers and steals his project proposal. When Chen Gang's father suffers a sudden myocardial infarction and urgently needs life-saving money, Liu Wei refuses to repay the debt, publicly humiliates Chen Gang, and fires him. Under the rescue and severe scolding of his girlfriend Su Yao, Chen Gang completely awakens. He feigns submission to return to the company, secretly unites with oppressed colleagues, and collects irrefutable evidence of Liu Wei's fake bookkeeping. At the company-wide meeting, Chen Gang makes a desperate counterattack, publicly throwing out all nuclear-grade evidence. Ultimately, Liu Wei is discredited and brought to justice. With his wisdom and maneuvering, Chen Gang successfully achieves a counterattack and is promoted to department supervisor.