
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."

When the Tollans suddenly decide to share weapons technology with SG-1, O'Neill tries to find out why.

An encounter with a benign alien species leads SG-1 into contact with yet another race that just seems too good to be true.

O'Neill (Richard Dean Anderson) tries to track down Carter (Amanda Tapping), who is missing on Earth and endangered by deadly experiments.

In order to monitor the alien, O'Neill becomes technical adviser to a new TV series with a familiar storyline.