BAP is famous drug dealers- known as the most wanted and dangerous men in West Korea. They also have access to thousands of illegal immigrants- they worship the group so bad no one ever turned their back on them. Fortunes make them BAP invincible. Bang Yongguk, the one who leads the group, has a dark past yet he never attempts to heal himself. He chooses to continue swimming in erroneous ocean for those who trust him, loyal to him.

Narcotics Team from Seollux Police Headquarters was anxious. They have been tailing BAP for almost two years but no results have been attained. Devoted and extremely compulsive young Superintendent Bang Yongnam has taken over the BAP case. He supervised the case with his cold-hearted and fast-paced order. Inspector Park Rin was chosen to infiltrate BAP to bring them down and take them to face justice. Distressingly, the Narcotics Team leads by Chief Inspector Yong Junhyung has found out Bang Yongguk and their superior, Bang Yongnam were bloodly linked, in fact, they are twin.

Rin finds herself in total distress when her career and her life brings unsettled conflict . . .