Falling Skies (2011)

FALLING SKIES begins with the image of the world in chaos after an alien attack destroyed most of the planet. In the first six months after the invasion, the few surviving survivors gathered outside the big cities to begin a difficult retaliation. Every day is a new test of survival, because civilians who have become soldiers must also defend those in their care, but also fight the alien invaders, without knowing where they come from or what their goals are.