Aster is an Adept — a magical warrior serving the powerful Blackwood mage family. He has important duties like sweeping the training arena, milking harmless pixies for their pixie dust, and battling to the death to protect the family's heir from supernatural threats against her. Aster is attacked by a mysterious monster, which pushes him to learn more about his own powers while keeping his charge safe, all while skirting around the family's murky secrets. On a school night.