On the sentient World of Amedia, those born Wizard perform Magic; those born Plain do not. Astra Fairweather was born Plain — no Wizard in her lineage, no Magic in her past.
Amedia gives her Magic, anyway.
Despite antagonism and prejudice, Astra learns to use her Magic and manages to win the annual Summer Apprentice competition ...
... Just in time for the World to end.
In the wake of Blight’s slaughter of Wizards on First of Summer, the Wizard Council unveils its plan to stop Blight, to kill Blight. Astra Fairweather knows the Council’s plan has no chance of success because she’s certain Blight is Instinctive, as she is: his Magic will be undiminished, even as every other Wizard on Amedia will be hobbled as Magic dies around them.
The aftermath of Magic’s demise finds Astra and her fellow apprentices faced with the task of rescuing those retired Wizards and Wizard children who still live. Can they survive a deadly cold winter long enough to save the survivors?