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When a meteor destroys the Earth's rotation, a group of people are relocated to an alternative world and granted three lifetimes for salvation, but after learning the fate of those left behind, the group is divided.
Cain, now cursed by immortality, learns that Noah and Evelyn are among those who possess the key to return to Earth. He begins hunting them through their first lifetime, which resembles the western frontier.
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.
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.
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.
In the dwindling hours of their last lifetime, Vulcan leads Kroden's bandits to the Siena and Warrick, whilst Cain follows Noah and Evelyn. The turbulent and bittersweet reunion leaves some robbed of their escapes and others of their lives.
