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 dangers of the world beyond.

The group adjusts to the reality of life outside their community's walls, while Iris attempts to take charge despite Hope's reservations. Simultaneously, Felix and Huck trail the teenagers, and Felix is forced to confront unwanted memories.