When Dai Miyamoto stumbles upon jazz, his world transforms dramatically. Transitioning from a former basketball player to a saxophonist, Dai immerses himself in relentless practice to ascend to legendary status. Departing his hometown of Sendai for Tokyo's vibrant jazz scene, he realizes the harsh realities of a musician's life. Through unwavering passion, Dai gradually earns the respect of the arrogant yet gifted pianist Yukinori. With the recruitment of his friend Shunji on drums, they establish a gritty jazz trio whose unrefined essence captivates local crowds. As they navigate the competitive realm of music, the trio faces the profound question: what defines true greatness?