A letter exposing the corruption behind the on-site restaurants arrives at Cha Il’s desk, and a food poisoning case arises at the shopping mall construction site’s on-site restaurant. After urgently shutting down the JU Construction cafeteria and on-site restaurants, the Audit Team investigates corruption behind the selection process of the on-site restaurants. However, the Audit Team struggles to find clear evidence and faces Dae Ung’s opposition.