Lisa and Jungkook are med students currently doing their internships at the famous Chung-ahn university hospital in Seoul. Life is ordinary until a day where Lisa gets herself involved into trouble she couldn't avoid. One thing leads to another complicating it, making the tangles in the laces grow. Innocent people get pulled in making matters worse. Secrets once buried deep resurface to reveal the truth convicting some as guilty and some not. But what concerns us is are Lisa and Jungkook innocent?