The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.

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.