Set 10 years into the zombie outbreak, this "Walking Dead" spin-off focuses on four Nebraska teens with the barest recollection of the world before-sibs Iris (Aliyah Royale) and Hope Bennett (Alexa Mansour), Silas Plaskett (Hal Cumpston), and Elton Ortiz (Nicolas Cantu)-as they must deal with survival outside their Omaha encampment when they escape to free the Bennetts' imprisoned father (Joe Holt). Julia Ormond, Nico Tortorella, Annet Mahendru also star.10 episodes on 3 discs. 7 3/4 hrs. Widescreen; Soundtrack: English.