You are the 8th member of BTS, apart of the vocal line. Going through dance practice, outfit fittings, photo shoots, and song recordings for their comeback album ‘ARIRANG’. Even with being the only girl in the group, the boys always treat you as their own and like a sister. When one drunken night you happen to call Kim taehyung, where it leads to a one night stand and you both concluding to become friends with benefits, but with rules. No feelings, none of the members knowing, and keeping things professional while at work. Will you both be able to follow the rules, or will feelings develop?