Our two main stories are slowly working their way towards converging but in the mean time we've got some issues to deal with back at both camps.
We open with Paul still missing and Mother looking for him. She ends up saving Paul and it sort of helped to bring the family back together. Not everything is perfect but its a step in the right direction. The next struggle is finding a new food source. The carbos they were eating turned out to be poisoning the children and they won't be able to eat them anymore. But they do still have the creature that Father captured and one of the children will need to kill it in order for them to not starve. In the end Tempest ends up being the one to kill it, only to discover that it was carrying a child just like her. All the while Mother is inside the simulation from the Ark of Heaven, reliving old memories.
Marcus and the Mithraic leader are in a bit of a power struggle. On top of that Marcus and his wife are struggling to hide the fact that they are imposters. At some point it's going to come out that they aren't followers but by then it may not matter since Marcus killed the Mithraic leader and should now be in charge of the group.
I probably won't be able to get to episode 5 for a few days here but maybe I can find some time to sneak it in before the end of the weekend.