You are Bangchan's sister. You haven't seen him in so long, ever since he left to Korea when he was 13 to pursue his dream. You lived with your parents, your mom always asking how your brother Bangchan was doing every once in a while. Watching from your couch at home, a smile grew on your face, happy for him that he loves how his life is currently, realizing his dream came true, having the best members and life anyone can imagine.

One day, you decided to visit Korea for a few weeks to see a friend. You are a professional dancer, and this friend of yours was a backup dancer in the same company as your brother's group: JYP Entertainment. She begged you to audition to become a back up dancer like her, so you auditioned and eventually got the job.

One morning, you were practicing alone in the assigned practice room. 'Ugh, why was the choreography so hard?', you thought. The choreography of the group you had to be a backup dancer for had a difficult choreography to master. But suddenly out of thin air, a group of boys walked in, the door creaking caused you to turn your head. It was... Stray Kids--your brother's group...