The kpop world is not only fun and happy memories. And Lee Chaeryeong knows it. After a long time suffering hate comments, she bumps with a mysterious fan who touched her heart by saying "Don't cry you are really talented and we are there for you" The boy from the fan sign told her that there was a fan base supporting her from shadows. But what will happen when that fan base is not real at all? And what is worse... What if that mysterious boy by the name "Shadow", is actually her childhood friend?