Immediately following the events of TNT's Falling Skies season 1, the second Mass gets pinned down by alien forces and sustains heavy losses. With an army of skitters closing in, the group shields themselves in an armory in Fitchburg, ready to finish the battle once and for all. * Based on Falling starring Noah Wyle. * A prequel to Falling Skies season 2. * Features a short story by executive producer Mark Verheiden.