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Iris welcomes an enigmatic ally to their community while Hope questions the visitor's motives. A message upends the sisters' worldview, forcing them to decide between the safety of their home and the uncertainty of the world beyond.
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The group adjusts to the reality of life beyond the walls of their community; Iris tries to take over, despite Hope's reservations; Felix and Huck follow the teenagers, while Felix is forced to face unwanted memories.
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Overwhelmed by the past, group members adopt opposite strategies to deal with a huge obstacle; pressure on the group to return home.
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The group seeks shelter from a storm inside an abandoned school; while supplying, they imagine what life was like in high school and encounter new threats, both alive and dead.
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While the group works together to cross the Mississippi River, a plot to take the teenagers home hits an obstacle; a group member must overcome past traumas to save others from an oncoming threat.
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When an unexpected newcomer reveals information that can help them reach their destination, the group makes a deal; while some are intrigued by the new arrival, others are suspicious.
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While the group is looking for something to advance their search, one of them remembers their struggles in the early days of the apocalypse. A game of truth or challenge brings emotions to the surface.
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A horrible discovery finds the group at a crossroads and leads one of them to revisit past traumas.
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A series of setbacks causes a member of the group to reevaluate their role in the mission. Someone makes an amazing discovery. A surprising revelation casts everything in a new light.
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A divided group struggles to get together. Others turn to the greater good.