As they explore the distant Pegasus galaxy, the Atlantis Expedition encounters great challenges, great friends — and great foes. Often, their adventures begin in their home base, Atlantis itself, a city built thousands of years ago by the highly evolved and mysterious Ancients. Atlantis is a treasure trove of strange technology, all of it wondrous and some of it downright lethal.
The city is also linked to countless planets and human civilizations throughout the galaxy via the Ancients' network of stargates. The team confronts terrible dangers as they travel among these foreign stars. The Wraith, who feed on human life, dream of one day seizing Atlantis as a gateway to the rich feeding grounds of Earth. More recently, the Asuran Replicators — artificial life forms once created and then abandoned by the Ancients — have become determined to claim Atlantis as their rightful home … at any cost.
With the stakes this high, Stargate Command assigns the best of the best to lead the Atlantis Expedition: Col. Samantha Carter (Amanda Tapping). She's new to the Pegasus galaxy, but her years of stargate exploration in the Milky Way have given her a wealth of military and diplomatic skills to compliment her scientific genius.
Working beside her is Lt. Col. John Sheppard (Joe Flanigan), the team's gifted military commander and undisputed best pilot. Two Pegasus-galaxy natives add their special perspectives to the group: Teyla Emmagan (Rachel Luttrell), the caring and quick-witted leader of the Athosian people; and Ronon Dex (Jason Momoa), a warrior who lost his home and family to the Wraith. The expedition's new chief of medicine, Dr. Jennifer Keller (Jewel Staite) finds her quiet confidence tested by the alien wonders of the Pegasus galaxy.
Last but certainly not least, Dr. Rodney McKay (David Hewlett), a brilliant but prickly astrophysicist, butts heads with all of them — but only to hide how much he cares for them.
Currently in production in Vancouver, British Columbia, Stargate Atlantis is distributed by MGM Worldwide Television Distribution. Brad Wright and Robert C. Cooper serve as executive producers on the series; both were also executive producers of Stargate SG-1.