Simon, Baz, Penelope, and Agatha return to England, back to the Watford School of Magicks, and back to their families for a final adventure. Simon must decide whether he still wants to be part of the World of Mages-- and if he doesn't, what does that mean for his relationship with Baz? Meanwhile Baz is bouncing between two family crises and not finding any time to talk to anyone about his newfound vampire knowledge. Penelope would love to help, but...

A teen girl, Aideen, makes a journey from self-protectively tough to ready and willing to face her main problem: her single mother's alcoholism. Aideen's best (and only) friend is pulling away. Her mother's drinking problem is a constant concern. She's running out of diseases to fake so she can skip PE. When she sees her nemesis, overachiever Meabh Kowalski, in the midst of a full-blown meltdown, she sees a problem that-- unlike her own disaster...