In a world where music and reality intertwine, a group of young prodigies faces a new challenge that threatens to crumble the delicate balance of their lives and dreams. The story follows Haruka, a talented singer struggling to escape the shadows of her past while trying to find her voice in a universe filled with melodies. Alongside her friends, a diverse group of artists with unique abilities, they embark on an unexpected journey through parallel dimensions where music is both a form of expression and a powerful weapon.
Things get complicated when they discover that a dark force has invaded their world, stealing Miku's ability to sing, the legendary virtual icon who has been their inspiration and guide. Without Miku, color and joy begin to fade, and the emotional connection that binds them is severely threatened. Determined to restore harmony, the group must confront their fears, overcome their differences, and sing together to face the shadow looming over them.
As they advance, secrets of the past are revealed, and the true power of friendship and music is put to the test. With stunning musical numbers and dazzling animation, this film is a tribute to creativity and hope, reminding us that even when the world feels broken, there is always a reason to rise up and sing.