First air date
July 15, 2004
Lieutenant Colonel Sheppard leads a group of investigators to explore distant planets and galaxies through the use of stargates. The aliens known as the Ancients built a system of stargates for instant travel through the many galaxies. The Atlantis expedition leaves from Earth and travel to Lantea to find the lost city of the Ancients; Atlantis. They arrive and are confronted by a powerful enemy called the Wraith. They are unable to leave Lantea. The power demands drained them of the resources to return to Earth. They must make friends with the people of Atlantis to stay alive and fight the Wraith while trying to find the technology to renew their power and return home.