Eun Si Yeon is a police officer and she was demoted to the hit-and-run task force at a police station from the regional investigation unit at the National Police Agency and will work alongside Seo Min Jae, who is the ace officer of the hit-and-run task force. The two will be working to chase down Jung Jae Chul, who is a former Formula One racer now committing crimes with his madness for speed and cars.