Gwanghwamun College is college taking talented,  hardworking students between 15-24 years old and giving both high school and university education on subjects arts, sports and music. This is the story of Jung Soo Jung and Lee Taeyong, becoming each other's first love and exploring their history and their friends story. What if you could turn back time? What would you change? And what would have happen to you and your loved ones if you do?