Mega Disasters examines what would happen to modern cities if historical disasters, such as the 1906 San Francisco earthquake, were to happen again. Atlantis Apocalypse shows the fate the befell the Greek island of Santorini 3500 years ago, as the island was blasted apart by a volcano that decimated the Mediterranean, while Deadly Jet Collision suggests what would happen if today's superjumbos were to collide.