Due to rising building material prices, home decoration foreman Zhou Jianming can only raise his construction quotes. Black-hearted apprentice Jia Hao steals the craft and sets up on his own, not only seizing Zhou Jianming's original foreman position, but also snatching a batch real estate home decoration bulk order with low prices. He secretly replaces inferior plumbing materials and formaldehyde-exceeding materials, causing a large number of new houses to leak, short-circuit, and residents to suffer formaldehyde poisoning. Real estate contractor Wang Shuo holds the second-phase project, and hurriedly finds Lao Zhou, who can only take small retail jobs, to apologize and ask for help. Zhou Jianming sets strict construction standards and makes a comeback against the wind with superior craftsmanship.