After her mother is murdered by her stepfather, gifted 15 year old student Pearl goes to live with an ex-lover of her mother, a grumpy unemployed film director who, pending the results of a paternity test, may be her biological father.

Falling Skies opens in the chaotic aftermath of an alien attack that has left most of the world completely incapacitated. In the six months since the initial invasion, the few survivors have banded together outside major cities to begin the difficult task of fighting back. Each day is a test of survival as citizen soldiers work to protect the people in their care while also engaging in an insurgency campaign against the occupying alien force.