Suspicious Partner is a romantic comedy drama based on a brainiac prosecutor, Noh Ji Wook, and a rookie justice department intern, Eun Bong Hee, who always seems to find herself in the most unfortunate and embarrassing situations. Bong Hee is falsely accused of murdering her ex-boyfriend, and Ji Wook gets demoted because he risks his career and reputation to save Bong Hee. Things get complicated as their careers and love lives get entangled, but one thing brings them together- catching the real culprit responsible for a series of murders before they run out of time and get themselves killed. Ji Eun Hyuk used to be a good friend of Ji Wook, and their friendship used to be the strongest ever. During Eun Hyuk's troubled childhood, Ji Wook used to feel like his only family. However, due to an incident, their friendship has be torn apart, and Eun Hyuk strives to start a friendship with him again.