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.
Noah and Evelyn continue to navigate through their second lifetime, but when Cain uncovers their location, they are forced into their third lifetime, a dystopian wasteland.
Noah and Evelyn navigate through their second lifetime, which resembles the 1920s, only to learn the true nature of their mission back to Earth and unite with their partners.