Stargate SG-1

The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite Air Force special operations team, one of more than two dozen teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, Replicators, and the Ori. Watch Stargate SG-1 series full episodes online streaming for free. Stargate SG-1 is a science fiction series based on the original film Stargate. It involves the team SG-1 going on various adventures to different alien worlds through Stargates. Throughout the series they encounter various alien threats and allies including but not limited to the Goa'uld and the Asgard.