The group are looking towards a hopeful future, but not everyone feels the same about their altruism.
The plane must take off. But will it? And if so, can Al and Strand land it?
Alicia tries to convince the kids to come back, and Morgan hopes he can help Grace.
Alicia and Morgan run into a new face in radiation territory.
Alicia, Morgan, and the others try to make the world a better place. But it's not working.
Morgan tries helping Martha, but everything goes horribly wrong.
Morgan grapples with his guilt. Alicia and Charlie finally find their friends again.