Detective Chun Jae In mistakenly disrupts an undercover operation while investigating a child prostitution ring. Despite the setback, she’s tasked with a new mission: going undercover as a schoolgirl to protect the daughter of a Mafia witness. As she navigates school life, her math skills are tested, she faces off with bullies, and finds herself drawn to a fellow student. Will she stay focused on the mission and save the day?
(Source: MyDramaList)
