Cha Gunmu' , who infiltrates the after-party of L Company's shareholders' meeting to find clues about Red Diamond, encounters 'Yeon Taeoh', the youngest son of the Yeonsun Group and a genius racer. While chasing the target, Gunmu witnesses Taeoh drinking alcohol laced with drugs, and ends up saving him and missing the target. In the hotel where the drugged Teoh was laid to rest, something strange happened to the drugged Taeoh...? “Why don’t you bear all your responsibilities to the end?” Gunmu, who was helplessly caught up in Taeoh’s actions, leaves the hotel room disgusted by his arrogant attitude and vows never to see him again, but he hears that his target, Red Diamond, is related to the Yeonseon Group... “This debt will be properly repaid later.” Would this be just a moment of burning pleasure or a tenacious and brutal relationship?