Humans acquired an ability called Mana, whose abilities include the use technology by interfering with the physical phenomenon and to move objects without touching them. Thanks to Mana, humans enjoy an era of prosperity free from anxiety, poverty, and conflicts. Angelise is the first princess of the Empire of Misurugi. She is a celebrated member of the Empire until the day of her coronation, where she finds out the shocking truth that she is a "Norma" – an irregular being who cannot use "Mana", and who are treated as "things" rather than humans. Having her name taken from her and losing everything, Ange is isolated on Arzenal, a remote island. There, she is forced to join a group of Norma women who spend their days hunting mysterious creatures known as DRAGONs with giant robots known as Para-mails.