Li Mo, the project manager for the Party of the First Part, repeatedly showed tolerance to Yuanada Food, which they had cooperated with for three years, but Liu Chang, a sales representative, falsely reported the procurement budget and used near-expiry pastry gift boxes to impersonate high-end gifts worth eight hundred yuan, swallowing the price difference. During a dinner party, Li Mo opened the boxes in public and led his team to confront them on site. Relying on gift registration records, the testimony of the supplier Lao Wang, and Yuanada's person in charge Zhao Hongyuan, he nailed Liu Chang's kickbacks and false reimbursements. Liu Chang changed his identity to join Hongyu Food for revenge, tricking them into cooperation with low-priced quotes and secretly swapping raw materials to dodge inspections. Li Mo left samples in advance and waited until forty days later when he obtained solid proof of quality exceeding standards, uniting multiple parties to produce a complete evidence chain to crush this revenge.