Looking for a respite after their involvement in the French Revolution, the TARDIS materialises on a planet to which the Doctor has never been before. While the girls enjoy themselves in the TARDIS wardrobe, Ian and the Doctor step out onto a verdant, but scarcely populated world. The extreme difference in the way time passes for the observers and the observed makes communication between the two impossible. After witnessing the end of the planet's civilisation, the Doctor and Ian return to the TARDIS and dematerialise to a new adventure.