The Doctor (David Tennant) and Donna Noble (Catherine Tate) arrive in what the Doctor believes to be Rome in the first century AD. After an earthquake and witnessing a nearby mountain begin to smoulder, he realises he has in fact materialised in Pompeii on 23 August, AD 79, one day before the eruption of Mount Vesuvius. When he and Donna returns to the TARDIS’ location, he is told it was sold to a Lucius Caecilius Iucundus (Peter Capaldi), a marble sculptor.