Aylett and her shadow are one, they always want to hunt. But because of her mentor's control, she fears her memories have been stolen. Now she is nineteen, she has studied for a long time in the mysterious Holy Order, and she wants a promotion, to drive the spirits in the name of the Golden Prince of prophecy. When a threat hangs over the crown, Aylet takes the chance to prove his dignity. Wanting to win the trust of the prince and escape from the cunning mentor, she decides to enter the competition with Terrine, a beautiful and brazen opponent who is not inferior to her in strength and can take the place she wants. They arrive at the Great Barrier along the way, face legendary evil, and the secrets of Aylet's past can surface... Will Aylet survive? Will she be able to find herself? Can she survive at least a day without a mentor?