Season three pretty much reboots the series, moving our band of survivors from California to Seattle, with one stop along the way. When last we left the Bowmans, with Snyder's help, they had managed to escape Los Angeles just as a rendition was occurring, with the gauntlet no less. Given that the entire world has been invaded that doesn't leave them with many options. The Bowmans settle in the woods in a small cabin. It's a huge change of pace because they aren't actively in the fight anymore, nor are they actively running for their lives. Snyder has been made into the family cook and water fetcher because he has proven to be capable of little else. The Bowmans fish, read books and play cards. It's a level of domesticity they haven't have since the invasion.
The aliens however are never far from their thoughts and so the area around the cabin has been completely booby trapped in case they have to flea quickly. Each day a drone takes a survey of the area. The first sign of trouble is when a drone crosses the barrier for the first time. They always knew that this set up would temporary, even if it finally felt normal for the first time in a long time. Bram has been picking up resistance radio communications and wants to reach out but at this point, Will prefers to lay low for as long as possible.
Things come to a head when a ship buzzes overhead before crashing several miles away. Will knows that they cannot afford to ignore this and tells his family to prepare to get moving while he and Snyder go check out what is going on. Even after six months, Will doesn't trust Snyder but he does believe that Snyder will best able to make sense of whatever they come across. Snyder and Will head out into the Woods and manage to find an old ski lift. When they get to the top, they see that not only has the shipped crashed, it seems as though it has been shot down. This immediately gets Will's wheels turning. What if the guests are actually at war with another alien species? Will wonders if it is possible to turn the enemy of an enemy into a friend.
Back at the cabin, Kate and Bram argue about reaching out to the resistance. Bram feels that it's no longer safe where they are and that they need to do something soon. Kate however continues to remain noncommittal, as the two of them dig up the gauntlet from its hiding place. Bram goes as far as to question who is actually in charge of the family, arguing that if his mother sides with him, then it's two against one.
Snyder and Will return and barely have enough time to report on what they've found before the arrival of a kill squad. Snyder is ordered to take Gracie and Charlie to their designated hiding space while Bram, Will and Kate hold down the fort and buy them just enough time to escape. Will, Kate and Bram fire from the cabin for as long as they can before starting a recording of gun fire and fleeing themselves through the woods. They kill each soldier they come across and Kate barely manages to avoid death herself. Sensing that Gracie, Charlie and Snyder might need more time, Will sends Bram to catch up with them and cover their back while they continue to try draw the soldiers away. Will and Kate find themselves in an open field and drone comes out of nowhere, killing the two soldier who had taken aim at them. Will immediately jumps in front of Kate blocking the drone from seeing her. Once the drone scans Will, it moves off on its own. Kate is suitably surprised and Will explains that this isn't the first time this has happened.