Sky Atlantic period historical drama starring David Morrissey, Mackenzie Crook and Zoë Wanamaker. Nine decades after Caesar failed to conquer Britannia, the Roman army is back on the island, led by a determined general named Aulus Plautius. Standing against him is a tribal people at war within and the mystic druids and their gods. Lookout for Steve Pemberton, making a guest appearance in Series Two, as Emperor Claudius, a petulant megalomaniac who rides in on an elephant and complains about his piles.