The third season of Falling Skies picks up just seven months after the 2nd Mass devastated Charleston, South Carolina, upon their arrival. With Tom having been elected to political office in the interim, the resistance continues to mount whatever opposition they can to keep the alien invaders from gaining full control.

As Sookie continues to learn about her supernatural heritage in hopes that she may finally understand, a newly reincarnated Bill struggles to reconcile his former ways with a mysterious set of powers that appear to be both a blessing and a curse from the ancient vampire Lilith. Elsewhere, Louisiana Governor Truman Burrell enacts his plan to rid the vampires from his constituency, and the Stackhouse siblings prepare to confront their parents' killer.