After a fierce dragon ravages her kingdom, Princess Arsinoe Grancamano strikes a pact with Sent Fauna, a formidable deity, by forfeiting a cherished memory. This sacrifice plunges her into a deep slumber from which she awakens a month later in a secluded village, mourning her mother's demise. Surprised by the arrival of King Cervin, who claims kinship with her, Arsinoe grapples with the loss of her father's memories traded to Sent Fauna. Despite this enigma, they embark on a journey together driven by Arsinoe's thirst for vengeance against Contrano, the dragon-summoner responsible for her kingdom's devastation and her mother's death.