About the series
Kim Do-gi is a graduate of the naval academy and a former special forces operative. When a maniac kills his mother, he is left completely alone and decides to devote his life to revenge. He takes a job at a luxury taxi service, where employees not only drive passengers but also take revenge on those who wronged them. One day policewoman Kang Ha-na tracks Do-gi down and begins to suspect that the mysterious taxi service is engaged in something quite different from what it appears to be at first glance.