It is a comedy action youth investigative drama that tells the story of international medal winners who were specially selected to become police officers through the Olympic Games in place of their medals and wear police ID cards around their necks to fight against the unconscionable and foul world.

Athletes from unpopular sports who had to worry about their own livelihoods because of an accident ended their life as athletes gathered together for their own reasons to form the "Olympic Avengers".In order to fight various crimes, they use their own stunts as contestants to face various incidents.

Park Bo Gum plays the role of Yoon Dong Joo, who is a former boxer and is now a patrol officer in the crime squad.His natural resistance to fighting and fists made him an Olympic hero, but he experienced setbacks and began his second life as a police officer.A rookie policeman who rediscovers his fighter instincts when he encounters intolerable injustice.

Kim So Hyun plays the Olympic shooting champion, Ji Han Na, the popular shooting goddess with outstanding appearance.Because of the incident that shocked the world, she gave up shooting and embarked on the road of criminal police.He may seem quiet at ordinary times, but when it comes to love and work, he is a reversal of character who has a courageous and straightforward charm.