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.

The group adjusts to the reality of life beyond their community's walls. Iris attempts to take charge, in spite of Hope's reservations. Felix and Huck trail the teens while Felix is forced to confront unwanted memories.

In the face of a massive obstacle, the teens face pressure to return home.