As preparations commence for Seishou Music Academy"s annual Seishou Festival, the girls of Class 99 are preparing to perform their own version of Starlight—a tragic story about two goddesses drawn together by celestial light yet destined to be torn apart, never to reunite. Designed to nurture the next wave of stage talent, this all‑female institution focuses on honing students" singing, acting, and dancing abilities.
One of the participants is 16‑year‑old Karen Aijou, a laid‑back girl who has long dreamed of the stage. Her passion for theater is rekindled when her childhood friend Hikari Kagura transfers to Seishou. Through Hikari, Karen discovers a hidden elevator that leads down to a vast theater beneath the school. The venue, run by a talking giraffe, becomes a battleground where classmates duel to earn the title of "Top Star," granting them a lead role in Starlight. Remembering the promise she made with Hikari to become stars together, Karen steps into these enigmatic contests hoping to turn their dream into reality.
