The gods have spoken, but Kerra must decide if she will accept their ruling. Antedia seals an alliance with Rome - on one condition.

After their long ordeal, Cait and her father finally arrive at the safety of the Cantii citadel, but a demon is on her trail.

Cait and her father seek shelter in the ruins of their old home, where she is visited by someone she never expected to see again.

The battle of wills between Kerra and Antedia intensifies, as the Regni play their trump card. Aulus enlists deadly exiles to find Cait.

The end is near. Cait, defiant to the last, has been captured by Hella. But despite Aulus offering a sizable bounty and a pardon for her previous crimes against the Empire, she chooses not to turn Caitin to the Roman camp as agreed.

Aulus continues his ruthless search for Cait and her father who he believe are a threat to his agenda, while Emperor Claudius arrives and is less than impressed with Aulus' progress.

Harka asks Hella to find someone for him. Elsewhere, Phelan realises he can't escape his past and Veran calls upon the Druids to fight back against Rome.

Ania faces a terrible choice, a mysterious traveller arrives asking questions about Lucius, while Cait and Divis continue with the next stage in the prophecy.

Aulus gets hold of information to lead him to the Chosen One and has a task for Amena, while Cait and Divis travel to a new safe haven.

Tensions occur in Divis and Cait's relationship as they prepare for the Trial of Water. Elsewhere, Amena arrives at Isca and is reunited with her sister Andra and tries to persuade her to strike a pact with Rome.

When Philo and Brutus come across a Roman camp, they decide to play a prank on their old colleagues. Meanwhile, Amena awaits her punishment.