Season 3 of 'Falling Skies' opens seven months after the 2nd Mass arrived in Charleston. In the interim, Tom has been elected as president of New Charleston, but he has his hands full as the struggle for humanity's survival continues. The resistance now faces an enemy who has become more resourceful, more pervasive, and even more merciless. But the 2nd Mass may have an upper hand when they are joined by powerful new alien allies. Now they have the universe on their side when those from another world fight to free Earth. No more running, no more retreating. Now is the time for the humans to stand their ground. Now is the time to fight.