Nana's father was the most feared gang leader in Korea that is before Nana's mother helped to put him behinds bars when Nana was just a couple of months old. Now 17 years later and Nana is all grown up but her life is about too change. Especial when her mother forces her to live with BTS saying it's for her own protection, as she finds out about her real father after his 17 years jail sentence.