Bangtan is one of the biggest mafia gang in entire South Korea. Their HQ (headquarters) is located in seoul. The leader of the bangtan gang owns many companies and is a successful businessmen. Bangtan is also known as BTS in short. They contain total seven members named Kim Teahyung, Jeon Jungkook, Park jimin, Kim seokjin, Kim Namjoon, Min Yoongi and Park y/n. Y/n is Jimin's sister .She is Mafia Queen and a badass girl assassin but no one from the members had ever seen her face leaving her own brother, boss and her best friend. Will Y/n be able to rescue her best friend? Will Y/n fall for jungkook?