On the heels of Tom and Lexi's successful albeit tragic mission to destroy the Espheni power core on the moon we pick-up with Tom's life hanging in the balance as his Beamer drifts into space. While onboard the beamer Tom encounters a surprising guest who urges him to find his inner warrior. Meanwhile back on earth Anne reluctantly steps into Tom's shoes to help lead the 2nd Mass in his absence. Against all odds Tom makes a miraculous yet mysterious return to earth. Once reunited with the 2nd Mass Tom shares a new plan for winning the war. The Espheni for the first time are on their heels and the 2nd Mass will not rest until they are gone from this planet for good.
Tom's life hanging in the balance as his Beamer drifts into space.
Maggie, Ben, Pope, and Sara go on a dangerous mission hoping to find supplies.
Tom's leadership begins to spread to remaining human militias around the world.
A mission to procure vehicles and fuel goes awry, and Cochise shares troubling news with Anne that will test both her medical and leadership skills.
The 2nd Mass leaves Chinatown en route to what they hope will be the final Espheni battle. Along the way, they encounter a deranged and desperate gunman who takes Weaver hostage.
Tom takes refuge with a unique family who has distanced themselves from the fight.
The 2nd Mass arrives at a safe haven - a functional military base run by Weaver's old colleague and flame, Captain Katie Marshall. But things aren't exactly as they seem.
Weaver discovers a shocking truth about an old friend. Maggie and Isabella are forced to work together, while the remainder of the 2nd Mass attempts an escape led by Tom.
Pope discovers that Tom is alive, and launches a final attack.
The final standoff brings the Masons, the 2nd Mass, and their new allies into the bowels of an iconic American location, wrought with new and unpredictable obstacles.