New employee Zhou Yan successfully completes a project, but receives only 500 out of his promised 30,000 bonus. When he demands an explanation, his manager berates him and tells him to leave if he does not want to work. On the surface, Zhou Yan keeps his head down and works hard, while secretly collecting evidence. He helps the credit-stealing manager rise to the position of project lead for a major project, then refuses to bail him out. After repeated setbacks, the manager is forced to bow his head, repay the money, admit his mistakes, and surrender his position. Zhou Yan leads his colleagues to complete the project and reclaim justice. The manager is eventually fired, and the beautiful boss personally invites Zhou Yan to dinner.