As Spike is inducted into Jimmy Crystal's gang on the mainland, Dr. Kelson makes a discovery that could alter the world.
The surviving Garrity family must leave the safety of the Greenland bunker and embark on a perilous journey across the decimated frozen wasteland of Europe to find a new home.
In a post-apocalyptic future after "The Quiet Rapture" event, a convict explores a blood ocean on a desolate moon using a submarine called the "Iron Lung" to search for missing stars/planets.