Greenland 2: Migration

Five years after the impact of interstellar comet Clarke destroyed civilization and most life on Earth, the environment is chaotic, with sudden electromagnetic storms, lingering radioactive fallout, deorbiting fragments of Clarke's debris ring, and tectonic earthquakes from the impact. The Garrity family lives in an underground bunker near Thule Air Base in Greenland; Allison is a leader, John a scout and engineer maintaining the community, and their now-teenaged son, Nathan, wants to be a scout. Earthquakes collapse the bunker, forcing an emergency evacuation. Most of the survivors are killed by a tsunami and the facility is destroyed.

The Garritys, Allison's colleagues Adam Shaw and Dr. Casey Amina, and a handful of other survivors escape on an aground lifeboat, barely making it to Liverpool. Adam is shot and killed by soldiers guarding another bunker from local survivors as a superstorm approaches. The last remnant of the Greenland group are separated in the ensuing chaos. Local survivor Obi agrees to transport the Garritys and Amina to Dover, but en route Obi is killed by impacting Clarke fragments and Amina is shot and killed by bandits.

The Garritys reach London, where they recuperate with an old friend who runs a memory care ward. While there, Allison learns John is dying from radiation sickness due to his scouting work. She wishes to stay but John insists they continue onward toward the impact crater in southern France, the family having heard rumors that it provides protection from electric storms and radiation, and is being farmed and protected by the military.

The family crosses the English Channel, now a dry, windswept wasteland, and meet a French family in Calais that shelters them. At the French family's request, the Garritys take their daughter Camille with them to the crater. They reach the front lines of a raging military battle defending the crater region, and are escorted behind the lines. On the way to the crater, insurgents ambush their transport, and John is shot defending the group.

The family finally reach the crater, where they find fertile farmland, fresh lakes, and clear skies free of ash and energy storms, confirming widespread rumors that the impact site had healed. The survivors rest before a safe valley. John succumbs to his wound within sight of their goal, satisfied he protected Allison, Nathan, and Camille for a safe new life.