Renowned as the 'Human Metronome' for his piano prowess, Kousei Arima captivates audiences with his precise performances. After a tragic loss renders him unable to hear piano music, he withdraws from the limelight, leading a quiet life in junior high with friends Tsubaki Sawabe and Ryouta Watari. Encountering the vibrant violinist Kaori Miyazono reignites his passion for music and introduces a new spectrum of emotions into his world, as their bond deepens through a shared musical journey.