Yellowstone is a park, but it's also the deadliest volcano on Earth. Beneath it, a sleeping 'dragon' is stirring. When an earthquake opens a crack for magma to seep through, other warning signs of an eruption start popping up, but they are ignored or dismissed as 'minor'. But when they learn an eruption will happen, panic breaks out through people of the USA and the world.

In 79 AD, one of the infamous natural disasters in human history occurred when Mount Vesuvius erupted. With speculative dramatizations of various inhabitants' final hours along with detailed documentation of the known facts concerning the eruption, the horrific day is vividly brought to life.