Fifty years ago, humanity first ventured to the unexplored planet of Mars. Today, cultural output is mostly driven by artificial intelligence, leaving people content to passively consume it. In this predictable world, Carole, a young woman in Alba City, dreams of becoming a musician but feels as though something essential is missing from her life. Meanwhile, Tuesday, also yearning for musical success, faces isolation as she strives to break into the industry in Herschel City. The universe brings these two together, united by their shared love for singing. Together, they work towards creating their own unique sound, driven by the hope that their music will inspire change and leave a lasting impression on the world. Despite humble beginnings, Carole and Tuesday are determined to make waves that will ripple across the universe.