Shui Luoling, a girl from Earth who has just graduated from music college, transmigrates after a car accident to a high-tech interstellar age where music is terribly impoverished. Bound to a System with a million-song library, she takes on the mission of spreading excellent musical culture. She signs with Yaohui Entertainment, a company founded by the second prince of the Interstellar Empire, who is also the cousin of the male lead, Ji Moying. There, she begins to make a name for herself in the interstellar entertainment industry.
Ji Moying is the interstellar world's strongest SSSS-class War God, but he suffers from violent mental-power episodes. When the heroine's singing eases his symptoms, he grows curious about her. As they spend time together, they gradually fall in love.
However, jealous of the heroine's influence in the entertainment world, the antagonist begins to sabotage her in secret. They smear her reputation and manufacture misunderstandings between her and the male lead, making him grow cold toward her. The heroine faces a difficult choice between advancing her music career and the dangers that come with the male lead's status as a War God. Continuing to spread music could put her in danger from his enemies, but giving up would betray her original purpose. Meanwhile, some factions across the stars are prejudiced against Earth's traditional music, and hostility from her entertainment-industry peers also hinders her career.
The male lead's mental-power episodes are becoming more frequent, and the heroine must find more ways to help him before time runs out. In the face of countless difficulties, she relies on her resilience and love of music to overcome every obstacle, using music to avert one crisis after another. In the end, the misunderstandings are resolved and their feelings deepen. Together, they find love among the stars and successfully spread Earth's musical culture. The heroine grows from a newcomer and a weakling into someone strong enough to stand at the male lead's side, and together they write an interstellar legend.
