Park Haeri, an 18 years old girl auditioned to be a trainee in bighit with her 3 best friends. Some time later she found out from her parents that she had a brother. Being a trainee was hard enough. She promised her parents that she would find him. Little did she know that he was so close. She also fell inlove with Jeon Jungkook the golde maknae of Bts. But he wad so cold to her. Will she be able to find her brother or will she just give up. Will jungkook be able to fall in love again or not??