– Britannia S01E01
Gen. Aulus Plautius leads an army of Roman invaders into Britannia; the invasion is foreseen by rogue Druid Divis, who finds an unlikely ally in young Celt girl Cait
– Britannia S01E02
King Pellenor is convinced his people can destroy the Romans using force, but Kerra seeks an alternative approach; Cait struggles to connect with Divis and is soon left to fend for herself; an attempted mutiny goes wrong; Aulus finds an ally.
– Britannia S01E03
Aulus returns from his visit to the Underworld; Pellenor is furious to learn of Kerra’s secret visit to the Romans; Divis persuades two Romans to get him into the enemy camp; Cait reunites with Divis to provoke a change in plans.
– Britannia S01E04
Veran leads his troupe of Druids to Crugdunon Fortress to deliver judgement to Kerra; events take an unexpected turn, leading to a new order for the Regni; Cait makes a confession to her father; Aulus punishes the Roman mutineers.
– Britannia S01E05
When Kerra is given a deadline to make a decision, Lindon offers her an alternative path; Phelan struggles to come to terms with the recent events, while Amenda spirals down a self-destructive path. Aulus visits Queen Antedia of the Regni.
– Britannia S01E06
Divis receives a deadly mission; Kerra adjusts to her new role as vendettas are plotted against her; Cait and her father find peace at Crugdunon, but it is short-lived; Aulus agrees to talk with Kerra but is sidetracked by a personal mission.
– Britannia S01E07
Camped out in a deserted village, Phelan is not convinced by Ania’s confidence in her prophecy; Cait and Sawyer find solace, but it is cut short when Divis’ demon Pwykka tracks them down; Roman deserters contemplate the gods.
– Britannia S01E08
The Cantii are still under siege from the Regni; Antedia uses a spy to her advantage; Aulus, sidetracked by a personal mission, tasks three sets of assassins to track down Cait; Lucius’ mistrust of Aulus grows and his actions have fatal consequences.
– Britannia S01E09
Divis tries to track down the abducted Cait; the siege of the Cantii reaches a bitter and violent end; Phelan and Ania seek answers from Druid Veran, who considers the hope that is left for them in the form of Cait.