Automotive repair veteran Qin Chuan is fined 3,000 yuan by his company for insisting on vehicle safety. Refusing to take the blame for management's mistakes, he angrily resigns and joins Antu, a struggling new company. His former employer, Hongtu, resorts to every means possible to cover up safety hazards, suing and smearing him while bribing suppliers in an attempt to drive him into a corner. As technical showdowns unfold and insiders turn against the company, a massive scandal involving refurbished parts is gradually exposed.