Evelyn's memory of Warrick is triggered, sparking a passionate reunion, whilst Noah and Siena celebrate their engagement. During a trip to town, the descendants come face to face with Cain and unearth the truth of his immortality.

In the final days of their third lifetime, Noah and Evelyn become desperate to reach Siena and Warrick, but an ancient stranger Kroden emerges and sends his son Vulcan to end their reunion and Cain's vendetta.