Ange, a youthful girl, receives a summons to a Sacred Land where she is bestowed with the prestigious title of the Legendary Etoile. Her duty entails rescuing the Holy Beast's nascent Cosmos which has been plunged into turmoil. Leaning on the nine Guardians, each possessing the power of one element, she sets out on a quest to salvage the ailing land and unravel her own identity.