Taehyun was never the main character. Living on the sidelines and watching his friends bloom and grow without him, he was left at rock bottom. So, he embraced what he did best: observing, and spent his time behind a camera as a film major in high school. However, all of a sudden, seeing her through his camera's lens, he experienced an indescribable emotion for the first time. She became his main character. Hyun Serin, a passionate dancer, driven by her emotions and heart, caught Taehyun's attention in an instant. He saw her raw feelings being conveyed through her movements and wondered if she, too, was just as lonely as he was. What will happen when their lives intertwine and a new chapter of his story unfolds?