A North Korean diplomat defects to the South during the Cold War, but the South Koreans have their suspicions as to whether he is an actual defector or a double agent.
Dr. Bong is a dentist and a carefree ladies' man whose son decides to play matchmaker and get his father to date their next-door neighbor. But their first meeting gets off to a bad start with a traffic accident, and Bong's son must work overtime to make the couple work out.
Tae-joo manages to rise in rank in a gang for saving the boss's life. However, prosecutor Dong-pal appears in front of him as his sworn enemy. Meanwhile, Jo-pil wants to get rid of Tae-joo's gang, training for revenge. The three men's goals intertwine.
