Jin I-Soo (Ahn Bo-Hyun) is a 3rd generation member of a chaebol family. He has a childish personality and loves to have fun. Jin I-Soo becomes a detective for a police violent crimes team. He tries to wipe out criminals by using his enormous wealth, personal connections, and his brilliant intelligence. He works with Lee Gang-Hyun (Park Ji-Hyun), who leads the violent crimes team. She is a veteran detective and highly dedicated to catching criminals. She also has smooth social skills. Although Lee Gang-Hyun views Jin I-Soo as a thorn in her side, they begin to work together as partners. She experiences a big change in her deceptive life.