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.

The beast beneath the mountain is restless... No one in the bustling city of Pompeii worries when the ground trembles beneath their feet. The beast under the mountain Vesuvius, high above the city, wakes up angry sometimes -- and always goes back to sleep. But Marcus is afraid. He knows something is terribly wrong -- and his father, who trusts science more than mythical beasts, agrees. When Vesuvius explodes into a cloud of fiery ash and rocks fall...

"No one in the bustling city of Pompeii worries when the ground trembles beneath their feet. The beast under the mountain Vesuvius, high above the city, wakes up angry sometimes--and always goes back to sleep. But Marcus is afraid. He knows something is terribly wrong--and his father, who trusts science more than mythical beasts, agrees. When Vesuvius explodes into a huge cloud of ash and rocks that fall from the sky like rain, will they have time...

At a refugee camp following the eruption of Mt. Vesuvius which buried Pompeii, Flavia and her friends discover that children are disappearing and a very powerful citizen might be involved.

"Mount Vesuvius is ready to erupt, threatening to destroy the city of Pompeii and everyone who lives there. Will new friends Thalia and Felix be able to escape, or are they destined to be buried under rock and ash? Thalia is excited to visit the bustling city of Pompeii, while Felix longs to leave it. As Thalia prepares to perform with her traveling troupe of actors, Felix is searching for a life of adventure away from his strict, politician father....