The Vespers want revenge. No surprise. What about the scattered Cahills? Do they have to unite to defeat them? To win the battle? And what if the arena is a normal school? Will the pressure of homework, lectures, classes, spy work, Cahill meetings and school balls eliminate our favourite characters...? After all, CAHILL+SCHOOL= CHAOS

Amy, Dan and the rest of the Cahills are coming together for a reunion. But there's a catch... THEY ARE BRINGING THEIR KIDS. What will happen when the next generation of Cahills finally meet?