Their magic tree house takes Annie and Jack to Pompeii just as Vesuvius is about to erupt, and they must find a Roman scroll before everything is covered with burning ash.

"During the infamous eruption of Mount Vesuvius, one boy struggles to escape. Can he survive the most devastating disaster of ancient times? In this thrilling addition to the bestselling I SURVIVED series, readers are taken back to antiquity with a young boy trying to escape as the giant Mount Vesuvius erupts. Does he have what it takes to survive the epic destruction of Pompeii?" -- summary from amazon.com.