1Episódio 1
Kang Pi-o é conhecido na escola como um talento incomparável. Até conhecer o misterioso Choi Jeong-yo e perceber que pode ter finalmente encontrado alguém à sua altura.
2Episódio 2
With Jeong-yo now his classmate, a bitter Pi-o keeps his distance. But when the two are tasked with a joint performance, Pi-o finds himself warming up.
3Episódio 3
When crisis strikes right before the joint stage, Pi-o improvises a fix — only to wonder if it was a mistake when Jeong-yo's skills outshine his own.
4Episódio 4
With Pi-o determined to reclaim his love for music, Jeong-yo shows Pi-o how to have fun on the piano. Jeong-yo's family troubles catch up to him.
5Episódio 5
Intent on proving himself, Pi-o joins the Prague Harmonie International Competition and asks Jeong-yo to join too. Pi-o's obsessive practice takes a toll.
6Episódio 6
Years later, Pi-o is successful and world-renowned — but miserable. Hong Jae-in tries to let Pi-o know how she feels. Pi-o hunts down news of Jeong-yo.
7Episódio 7
Pi-o finds himself stuck deep in a slump, but can't seem to overcome his fears alone. Later, a familiar face suggests collaborating on a performance.
8Episódio 8
Pi-o faces increasing pressure to do the joint performance, but his issues with the piano only get worse. Jeong-yo finally steps in to help.
9Episódio 9
Pi-o learns the shocking truth behind Jeong-yo's kidnapping. Jeong-yo asks for Pi-o's help with a piano piece, but his harsh words leave Pi-o rattled.
10Episódio 10
Pi-o realizes Jeong-yo has been hiding a huge secret. With everything revealed, Jeong-yo turns even more cruel, and Pi-o falls deeper into despair.
11Episódio 11
As the Korean Symphony’s 80th anniversary concert begins, Jeong-yo and Pi-o face a turning point — but when the performance ends, only one person remains on stage.
12Episódio 12
After painful losses, Pi-o considers leaving music behind, but Jeong-yo shares his final feelings as their last four-hands performance begins.