Conclusion. Hostilities against the invaders amplify as a nuclear specialist devises a scheme to destroy the aliens' power. Meanwhile, suspicions grow about a mole inside the resistance; the leaders make a crucial decision; Anne has concerns about her newborn.
Part 1 of 2. Season 3 opens seven months following the group's arrival in Charleston, S.C. Tom has been elected to office, yet one of his decisions creates tension; Hal deals with vivid nightmares; and Tom and Anne prepare for their baby.