Yumemi Nanahoshi is an ordinary middle school student who lives in the small suburban seaside town Hoshimaki.

However, one day a creature named Kirara—the princess of Little Star, a planet destroyed by a monster called Muma—appeared before the ordinary Yumemi.

Muma—who manipulates nightmares to devour people’s souls—followed Kirara to Earth in pursuit of her.

To save everyone, Yumemi must become a “Dreamer” and defeat Muma with “Purification Songs”! With the support of her childhood friend Kanato, Yumemi becomes a Dreamer and continues to fight against Muma.

To protect the peace on earth. And to protect everyone’s dreams!