With the Ancients' city of Atlantis discovered in the Pegasus Galaxy by Stargate Command, Dr. Elizabeth Weir and Major Sheppard lead a scientific expedition to the ancient abandoned city. Once there, the team not only find themselves unable to contact Earth, but their explorations unexpectedly reawaken the Ancients' deadly enemies, The Wraith, who hunger for this new prey. Now with the help of newfound local allies like Teyla Emmagan, the Atlantis Team sets about to uncover their new home's secrets even as their war of survival against the Wraith begins.
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see all options Availability data: JustWatch
- Seasons
- 5
- Episodes aired
- 100
- Latest aired
- S05E20
- Total runtime
- 3d
Timeline when each season aired
- Season 1 July 2004 – January 2005 20 episodes
- Season 2 July 2005 – January 2006 20 episodes
- Season 3 July 2006 – February 2007 20 episodes
- Season 4 September 2007 – March 2008 20 episodes
- Season 5 July 2008 – January 2009 20 episodes
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S03E01 No Man's Land (2)
July 13 · 43min find the promo
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The team desperately attempts to stop two Wraith hive ships from reaching Earth. Sheppard must rely on an old foe to rescue McKay and Ronon.
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S03E02 Misbegotten (3)
July 20 · 44min find the promo
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The Atlantis team must decide the fate of a colony of Wraith they have turned into humans. Dr. Weir must defend her leadership when she is evaluated by the I.O.A.
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S03E03 Irresistible
July 27 · 42min find the promo
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Sheppard's team meets an obnoxious man who is adored by all thanks to a secret that he carries -- and who has an unexpected effect on them.
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S03E04 Sateda
August 3 · 42min find the promo
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Ronon Dex is captured by the Wraith and returned to his homeworld, where he is haunted by his past as he is forced to once again become their prey.
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S03E05 Progeny
August 10 · 44min find the promo
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Weir and the team visit an advanced civilization that split off from the Lanteans thousands of years ago, but discover that they may not have left Atlantis in peace.
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S03E06 The Real World
August 17 · 42min find the promo
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Elizabeth Weir wakes up in a mental institution, where she is told that the expedition to Atlantis and the Stargate are figments of her imagination.
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S03E07 Common Ground
August 24 · 42min find the promo
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Colonel Sheppard finds himself the prisoner of a Genii commander, along with a desperately hungry Wraith who has been separated from his hive.
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S03E08 McKay and Mrs. Miller
September 7 · 44min find the promo
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Rodney McKay is reunited with his estranged sister back on Earth, who has given up a brilliant career as a scientist to raise a family.
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S03E09 Phantoms
September 14 · 42min find the promo
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Sheppard and Ronon are influenced by a mind-altering device created by the Wraith while on a mission to rescue a lost team.
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S03E10 The Return (1)
September 21 · 42min find the promo
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The Atlantis expedition is stunned to learn that a ship full of Ancients is returning to reclaim their lost city.
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S03E11 The Return (2)
November 19 · 42min find the promo
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The Atlantis team goes against orders to try and save Atlantis from Replicator control -- and to rescue General O'Neill and Richard Woolsey, who are trapped in the occupied city.
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S03E12 Echoes
November 26 · 42min find the promo
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The inhabitants of Atlantis begin to suffer ill effects when the planet's whale population begins migrating to the island city, bringing an unexpected harbinger of doom.
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S03E13 Irresponsible
December 3 · 42min find the promo
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The team finds Lucius Lavin manipulating the people of another hapless planet, using Ancient technology to pose as an invincible hero.
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S03E14 Tao of Rodney
December 10 · 43min find the promo
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After an Ancient device gives Rodney superhuman powers, his enhanced brilliance is checked only by his impending death -- unless he can learn how to ascend.
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S03E15 The Game
December 17 · 42min find the promo
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Sheppard and McKay discover that their competitive video game has been controlling a planet of real people, who now stand on the brink of war.
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S03E16 The Ark
January 7 · 42min find the promo
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The team discovers the last of a civilization in suspended animation, whose survival is at risk when their station is critically damaged.
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S03E17 Sunday
January 11 · 42min find the promo
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The team tries to relax during a mandatory day off, until an explosion leaves three people dead -- and reveals that one scientist is a walking time bomb.
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S03E18 Submersion
January 14 · 42min find the promo
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The team discovers an Ancient drilling station deep beneath the surface of the ocean, only to find that a Wraith queen is still alive there.
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S03E19 Vengeance
January 28 · 44min find the promo
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The Atlantis team investigates the disappearance of one of their allies, only to find an old enemy engineering a race of powerful monsters.
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S03E20 First Strike (1)
February 4 · 42min find the promo
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An unstoppable energy weapon leaves Atlantis under siege after Earth launches a preemptive attack against a very powerful enemy's homeworld.