Auto mechanic Chen Hao works overtime through the night to raise money for his younger sister's surgery. When he refuses workshop supervisor Liu Qiang's unreasonable demands to pocket the tips and install substandard brake hoses, Liu beats him and fires him. Liu secretly replaces the brake hoses on Zhao Heihu's Maybach with inferior ones, causing the car to lose control at high speed and crash. Instead of admitting fault, Liu frames Chen Hao for deliberate sabotage. Zhao Heihu kidnaps Chen Hao with his men and forces him to sign a compensation agreement for ten million yuan. Chen Hao produces irrefutable evidence, including recordings and purchase invoices, exposing the entire truth and clearing his name. He legally claims 100,000 yuan to pay for his sister's treatment. In the end, Liu Qiang is sentenced to prison, while Chen Hao earns an advanced auto repair certification and is hired by Zhao Heihu at a high salary, rising to become a leading figure in the luxury car repair industry.