In her previous life, Shen Zhiyin, a chief vehicle appraiser, lost her daughter when the brakes failed at high speed. Wrongfully accused, she was imprisoned, and her family was destroyed. Reborn, she uses her ten years of experience to save herself in a desperate escape from the accident scene, only to discover that the car has no mechanical defects. The real danger lies in the soles of her shoes. Facing false accusations from the dealership, pressure from her company, public attacks, and threats from her family, she uses mechanical mechanisms as her breakthrough to expose a criminal industry involving counterfeit replacement parts, staged car accidents, and extortion of car owners. In the end, she clears her name and fights for justice for all women who have been hurt by prejudice against female drivers.