Picking up right where the movie Terminator 2: Judgment Day left off, this series follows Sarah Connor (Lena Headey) and her son John (Thomas Dekker) as they race to save humanity from forces sent from the future. Pursued by agents of Skynet, the mother and son must use their wits and create alliances to ensure that John survives to become the savior of the human race. Disguised as regular people, evil Terminators seek to destroy the duo.