Ernie just wants to have a solitary pint at her local pub and forget about her past as one of the most promising young mages in England. But when an old enemy returns, she must restore the memories she suppressed and reclaim her powers. With the help of fiery Rennie, shapeshifting Vi, and an endearingly bureaucratic cat, Ernie comes to grips with her grief over the past and grapples bravely with the very mage who bested her before. The race is on to find him before he can bend the elements to his will and become an unstoppable tyrant. As she fights to end the mage-killer before he ends life as we know it, Ernie the earth-mage resolves not to let herself be uprooted again.