Mahi is a girl who is chubby, wears glasses and has basically nothing she is good at other than studies. She has a REALLY good mind but she goes to South Korea to pursue her dreams of becoming an idol and somehow becomes a trainee at BigHit ent. Everyone bullies her there. She is a really big fangirl of BTS but they are cold to her. The CEO of bighit tells her that she has to lose weight in order to debut. Will she be able to achieve her dreams? How did she even become a trainee if she has no talent? What if the BTS members warm up to her? How will they help her achieve her dream?