Stargate is an intergalactic gateway, developed by an ancient civilization, that links planets from other solar systems to ours. The US Air Force assembles a Stargate team headed by Colonel Jack O'Neill (Richard Dean Anderson) for interstellar peacekeeping.
In the final season, Vala, a former Goa'uld host turned freedom figther, joins SG-1in their battle to defend the galaxy from the holy war of Ori. Meanwhile, relations between Jaffa and Earth continue to be strained.
