Ashwind Castle is a place of learning, magic, and sometimes danger. Dragon-kind have kept themselves separate from the mortals at Ashwind for hundreds of years. But when the young dragon Banprionsa and her friends go to Ashwind Castle so she can meet Siona, the girl she's been bonded to since birth, the other dragons follow. However, shortly after Banprionsa's arrival Siona goes missing. Banprionsa decides to look for her missing friend and ends up captured by the same evil sorcerer.
At Ashwind, students of all races and types excitedly make bonds to the newly arrived dragons, while Siona's brother, friends, and trusted adults are anxious about the whereabouts of the girls. Siona and Banprionsa are held captive by a mysterious, wicked old sorcerer who has a grudge against Ashwind and its inhabitants. A search party of mortals and dragons sets out to find the missing girls, but the land is large and time is running out.