Prince Oscar, heir to the throne of Farsas, was cursed in his childhood - a curse that prevents him from producing an heir. His last chance is the help of the Witch of the Azure Moon, but she lives in a gigantic azure tower that harbors many dangers...

Oscar and Tinasha venture out to Yarda to find its missing princess, and to put an end to the escalating civil conflict orchestrated by the Witch Who Cannot Be Summoned.

Oscar receives an unexpected guest, whose voice he recognizes. The secret of the witch's curse comes to light.