The families narrowly escape a burning Los Angeles on board Strand's yacht, and face new dangers at sea. Meanwhile, Travis tries to reach his grieving son.
Pursued by a potentially hostile ship the group sets course for a Ranger station, where they find a survivalist family -- with secrets to hide. On board the ship, Daniel tries to learn more about Strand's intentions.
With the boat slowed down by mechanical troubles, Nick, Alicia, and others go ashore to scavenge supplies from the wreckage of an airliner crash. While Travis works to repair the boat, Madison learns about Strand's mysterious destination.
Nick travels to the mainland on a dangerous solo mission to contact one of Strand's associates, while a hostile group boards the Abigail and takes the families hostage. Wounded and adrift on his own, Strand recalls his checkered past.
As Alicia and Travis find themselves in different forms of captivity on board Connor's boat, Madison leads a dangerous rescue mission to try and get her family back. Meanwhile, Chris has a fateful confrontation with his prisoner.
The group's arrival in Mexico comes with a cost, and Strand is reunited with an ailing Tom. While the group gets to know the dynamics inside the compound, Chris' inaction puts a dangerous strain on the family.
In the wake of Tom's death the group's position grows precarious inside the estate, and Nick tries to intervene on their behalf with Celia. Travis goes in search of Chris, and an increasingly paranoid Daniel lashes out.
Nick sets out on his own on a quest for survival and self-discovery, recalling his past before the apocalypse -- and running afoul of a band of ruthless bandits on the Mexican highway.
Madison, Strand, Alicia, and Ofelia find temporary refuge in an abandoned hotel, hoping for a respite in the midst of a city of the dead. Elsewhere, Nick must prove himself to his new community when he joins Luciana on a supply run.
Travis tries to keep Chris on the right track as the travel the countryside together, falling in with a group of young guys who offer them supplies. Back at the hotel Alicia finds a new ally as she attempts to descend the floors to help the others.
Madison attempts to bring the two factions inside the hotel together for their common good, and Alicia devises a dangerous plan to clear the hotel quickly. Nick uses his resourcefulness to help the Colonia.
Madison and the others work hard to get the hotel up and running as a workable home, but is forced to leave in search of medicine when a resident becomes violent. Alejandro reacts after a family deserts the Colonia, fearful that his fragile community may fracture further.
Travis deals with a difficult situation after Chris shoots a man, attempting to prevent his son from going further off the rails with his new friends. Refugees press in on the hotel, and Madison reveals a truth to her daughter.
As Travis tries to adjust to his new circumstances at the hotel, Madison makes an unsettling discovery among the new refugees. Elsewhere Nick tries to strike a deal with Marco to protect the Colonia, but instead discovers that the safe-hold is about to come under attack. Many miles away, Ophelia attempts to cross the U.S. border.
Madison faces a difficult reality after Travis' outburst of violence, and things go from bad to worse after tragedies pile up at the hotel. As Alejandro rallies his people to make a stand against the Narcos, Nick tries to convince him to evacuate the Colonia instead.
