Mad Dog

In 2017, the percentage of insurance purchase rate in Korea is 95%. There’s only 5% chance of meeting someone with no insurance plan. Choi Kang Woo is a former detective who works as a private investigator after having his wife and son badly hurt in an airplane accident. Jang Ha Ri used to be a gymnast, but she now works as an investigator for Mag Dog. One day, Kang Woo and Ha Ri run into Min Joon in the midst of a fraud crime investigation.

Two years ago, Kang Woo’s team was investigating on an insurance fraud case that involves a man named Ko Jin Chul. While chasing him down, the team’s newbie gets in a car accident, which causes Kang Woo to miss his flight to Jeju Island that he planned to go with his wife and son. The plane carrying Kang Woo’s wife and son crashes. The pilot responsible for the crash turns out to be Min Joon’s brother, Kim Bum Joon.

Min Joon threatens Kang Woo to get what he wants with a clip that contains all the illegal deeds Kang Woo committed while investigating cases. Kang Woo secretly goes into Min Joon's house where he finds the articles related to the plane accident posted up on the walls.