Plot

Set after the events of the Stargate : La Porte des étoiles (1994) movie, the series follows SG-1, one of many secret military teams of soldiers and scientists who travel through a gateway to other planets and fight against dangerous aliens to protect earth.

General Hammond summons Colonel Jack O'Neill out of retirement to embark on a secret rescue mission. O'Neill confesses that he disobeyed orders to destroy the Stargate on Planet Abydos, and that scientist Daniel Jackson may still be alive. Arriving on Abydos with his team, O'Neill meets up once again with the scientist, who has discovered a giant elaborate cartouche in hieroglyphics. All signs point to the fact that this is a map of many Stargates that exist throughout the galaxy - a development that makes the dream of the SG-1 team to travel throughout the universe in time a reality.—Sean Fitzgibbons

After the events of the Stargate film, the U.S. military reactivates the Stargate Program, a top-secret project centered on the ancient portal discovered in Egypt. The Stargate connects Earth to a vast network of worlds across the galaxy, opening the door to exploration, diplomacy, and defense against alien threats. Based at Stargate Command (SGC), the military forms several teams, with the flagship unit SG-1 led by Colonel Jack O'Neill, alongside Dr. Daniel Jackson, Captain Samantha Carter, and the alien warrior Teal'c. Through the Stargate, SG-1 explores new worlds, battles the parasitic overlords known as the Goa'uld, and forges alliances with alien civilizations. Across ten seasons, they defend Earth from powerful enemies-including the Goa'uld, Replicators, and Ori-while uncovering advanced technologies and ancient mysteries, blending science fiction adventure with mythology and military drama.