A high-level manager from a record company, along with his assistant, sets out to uncover the fate of the author of the popular song "The Saddest Thing of All." Enlisting the help of numerous experienced professionals in the music industry, they uncover the truth. It turns out that an incredible and touching love story plays a significant role in this situation. With the manager and his assistant's assistance, the feelings between a tender-hearted dentist and a photographer are reignited.