After relocating to Tokyo with his family, Yuu Haruna's mundane routine is disrupted when a chance encounter with high schooler Fuuka Akitsuki leads to a shattered phone and a perplexing connection. Despite their contrasting lifestyles, the two bond over a shared passion for music, embarking on a journey to establish a band and explore the competitive realm of the music industry. As Yuu's world intertwines with Fuuka's unconventional presence, Tokyo becomes the backdrop for a tale of budding friendship, musical aspirations, and the unfolding complexities of youthful ambition.