
A team of explorers made up of soldiers and scientists travels through a Stargate, an ancient portal to other planets. They use the Stargate to explore new worlds, forge ties with friendly civilizations and protect Earth from hostile forces. The TV series is based on the theatrical film "Stargate."

A Jaffa leader tries to rally his people against the Goa'uld, while seeking to forge an alliance with Earth.

SG-1 finds a replicator-controlled world and explores its origins.

Anubis' forces lay siege to a planet after the Shades of Gray NID team disables its defenses; SG-1 works with the captives to restore the protection.

Daniel tries to prevent a catastrophic accident on another planet and gets exposed to deadly radiation.