S03E12: The Suspicious Island

Do Gi finds the mastermind behind the resale app scheme, but the scammer gets killed by a bomb delivered by a guy in a fish truck. Do Gi and Mr. Jang trace the fish truck, which leads them to Samheung Island. The islanders seem unusually hostile toward Do Gi and Mr. Jang. Later, Do Gi finds out that the islanders have been watching their every move.