In downtown Seoul, an armored vehicle was hijacked, and 1.8 billion won in cash disappeared without a trace. Evidence at the crime scene indicated that the mastermind was a special investigation team leader named Baek Seung-chan. Upon hearing the news, Officer Baek Seung-chan, who was in a meeting at the police headquarters, was furious. The audacious criminal once again provoked the police, announcing his second crime plan. This time, he would try to make gold blocks worth 10 billion disappear. Baek Seung-chan received a tip that 600 kilograms of gold was being smuggled through Jeju Island Airport. In order to uphold his dignity, Baek Seung-chan urgently dispatched officers to Jeju Island, but the gold dramatically vanished right under the noses of the undercover officers. Ultimately, the mastermind began to surface. The genius-level crime was still unable to escape Baek Seung-chan's keen eyes. Baek Seung-chan captured one of the suspects and waited to catch the real big fish. At that moment, Baek Seung-chan received a phone call, and a familiar voice said, 'You know who I am, right?!' ...