Strand fights to maintain the peace of his new life after the sudden arrival of an old friend threatens it with ghosts of the past.

A survivor is at odds with the rest of the island and is forced to turn to another for help.

The horde led by Troy surrounds the walls of PADRE. Madison and her people must fight for their survival to save what remains.

As the series comes to an end, the fate of PADRE's survivors seems to rest in the hands of an unexpected hero.