On the day his father is supposed to receive the final payment, a project manager publicly tears up his ID badge, withholds all 30,000 yuan of his hard-earned wages, and humiliates him, saying, "People who do the manual labor don't deserve to look at the contract." Gu Cheng, the male lead, refuses to lose his temper. Instead, he follows the rework orders, inspection photos, material batches, waste records, and purchasing price differences to gradually expose the renovation company's elaborate scheme of underpaying workers, stealing materials, and falsifying accounts. In the end, he not only helps his father and fellow workers recover their wages but also changes the old rule that honest workers must endure humiliation to get paid into a new system where evidence and transparent settlements ensure they receive what they deserve.