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.

A divided group struggles to get together. Others turn to the greater good.

Hope's commitment to the future is put to the test, jeopardizing a potential reunion. Iris and Felix meet a new group. Startling revelations are made.