We're not just fighting for our lives. We're fighting for our existence.

An alien attack has left most of the world completely incapacitated. In the six months since the initial invasion, the few remaining survivors have banded together outside major cities to begin the difficult task of fighting back. When Second Massachusetts deputy commander Tom Mason (Noah Wyle) returns to the group three months after leaving on an alien spaceship in order to save his son Ben (Connor Jessup), he finds his loyalty questioned by his fellow survivors. The episodes comprise: 'Worlds Apart', 'Shall We Gather at the River', 'Compass', 'Young Bloods', 'Love and Other Acts of Courage', 'Homecoming', 'Molon Labe', 'Death March', 'The Price of Greatness' and 'A More Perfect Union'.