Episode 15 – 'Undefeated.' Based on the Changing Earth Novels by Sara F. Hathaway, including 'Dark Days in Denver.' In the ash-shrouded Federal Republic, Virgis mourns Cassidy while confiding in allies; Dexter and Johnny deliver justice to a monster; Vince hears bombing horrors en route to ruined homesteads where hopes fade; Erika defies TJ in a tense trek south, seizing a raider distraction for escape with breadcrumbs left behind; Bennet renews his vow to Vince amid despair; TJ clashes with Erika, using Dexter's capture as leverage.

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