About

Kang Bio is a genius pianist who has been famous in competitions since childhood, showing extraordinary talent. However, to Bio, the piano is not just music. It was a means to be recognized by his grandfather, the world-renowned conductor Kang Seung-woon, and to prove his own worth. Therefore, Bio lives under the pressure of always having to be perfect. He reacts sensitively to small mistakes and pushes himself endlessly if he is not satisfied with his performance. On the outside, he looks confident and cold, but inside, there is a desire for recognition and an anxiety that he might be lacking. Then Choi Jeongyo appears before Bio. Jeongyo treats music in a completely different way from Bio. While Bio pursues accurate and perfect performance through long hours of practice, Jeongyo creates music with innate sense and free expression. Bio feels a strong sense of rivalry toward Jeongyo's playing and soon learns that he is the very boy who beat him in a competition when they were children. Jeongyo reminds Bio of the memory of defeat he had forgotten, and at the same time, becomes his most powerful rival to overcome. By Bio's side is Hong Jaein, who has been with him since childhood. Jaein is a violist and Bio's long-time friend, knowing Bio's personality and past better than anyone. She notices Bio's behavior of caring about Jeongyo while pretending not to, and quickly recognizes Jeongyo's special musical talent. Above all, Jaein is one of the few people Bio can comfortably take a breath around when he is having a hard time. Bio and Jeongyo continue to clash over music, but eventually become four-hands partners playing on one piano. At first, they seem like the worst combination because their playing styles are so different. Bio tries to fit everything to his way, while Jeongyo plays freely following his senses. However, as they play together, the two begin to naturally understand each other's hands, tempo, and the flow of music. Even without speaking, they come to understand each other's music, and the two rivals gradually become partners and special friends. In particular, Bio feels for the first time that playing the piano itself is enjoyable while being with Jeongyo. Until then, music had been connected to competition, results, and his grandfather's recognition, but he could escape that pressure when playing with Jeongyo. Jeongyo also feels focus and passion for music again through Bio. The two become a relationship that understands each other best yet stimulates each other most strongly. Bio cherished Jeongyo but did not want to lose to him, and Jeongyo also wanted his music to be recognized. Eventually, the two participate in an important international competition together and become finalists. While preparing for the competition at a training camp, the competition becomes even more intense. However, on the day of the competition, at a crucial moment, Jeongyo suddenly disappears. Bio goes on stage alone and eventually wins, but he cannot rejoice even at the moment of victory he had longed for. This is because Jeongyo, his most important musical partner, was not there. After Jeongyo disappears, Bio searches for him for a long time, not knowing where he went. Even after becoming an adult as time passes, he cannot forget Jeongyo and lives with guilt that he should have done something that day. He continues to think of Jeongyo even in front of performances and the piano, unable to escape the past. And because a lot of time has passed, Hong Jaein becomes Bio's manager. Hong Jaein is the one who stayed by Bio's side until the end. Jaein watches Bio, who collapsed after Jeongyo disappeared, from close by and stays by his side for a long time. Jaein, who has liked Bio for a long time, cannot easily reveal her feelings, but sometimes she says it as a joke. She is consistently with Bio whenever he is having a hard time. Bio also relies comfortably on Jaein, showing a side of himself he doesn't show to others. However, Jeongyo still occupies the largest place in Bio's heart. Even with Jaein by his side, he cannot forget Jeongyo and does not stop looking for him. Meanwhile, Bio discovers traces of Jeongyo through a familiar piano melody and faces the possibility that Jeongyo, whom he has searched for so long, might be alive. Meanwhile, Jaein also finds it difficult to hide her feelings any longer. Jaein, who has waited for Bio for a long time, wants to confirm what kind of existence she is to Bio. Jaein was always in the closest place to Bio, who was greatly shaken in the process of finding Jeongyo. Eventually, the relationship between the two, which has continued since childhood, approaches the point of crossing the line of being just friends, and Bio also knew that Jaein continued to like him. Because she had been asking him to marry her since they were young.