Stuntman Cha Dal-geon gets involved in a tragic airplane crash and ends up discovering a national corruption scandal in the process. Go Hae-ri, the oldest daughter of a deceased marine, decides to work for the National Intelligence Service as a secret ops agent in order to support her mom and younger siblings, although all she wanted to do is to become a civil servant.

Choi Ja-Hye is a lawyer and Dokgo Young is a detective with a hot temper. They work together on a murder case where the suspects are children from the elite class.