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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S02E01 The Siege (3)
July 15 · 42min find the promo
Show synopsis
The Daedalus arrives to defend Atlantis from the Wraith onslaught, but it may not be enough when the team discovers that an even larger armada is on the way.
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S02E02 The Intruder
July 22 · 44min find the promo
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The Daedalus is infected by a Wraith computer virus, while members of the expedition hope to return to Earth.
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S02E03 Runner
July 29 · 42min find the promo
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Sheppard and his team attempt to locate Lieutenant Ford, only to find themselves captives of a former soldier who is being hunted by the Wraith.
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S02E04 Duet
August 5 · 42min find the promo
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A run-in with a Wraith Dart leaves the consciousness of a precocious Atlantis security officer trapped in Dr. McKay's mind.
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S02E05 Condemned
August 12 · 42min find the promo
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The Atlantis team finds a culture that lives in relative safety from the Wraith, because they hand over their criminals to the Wraith -- and crash-land in the volatile penal colony.
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S02E06 Trinity
August 19 · 44min find the promo
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McKay puts the team at risk when he tries to perfect unfinished Ancient technology that wiped out a civilization. Ronon Dex discovers that he is not the lone survivor from his world.
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S02E07 Instinct
August 26 · 44min find the promo
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The team discovers a young Wraith girl who has been raised by a human, and is in hiding from the people of her human village in fear of her life.
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S02E08 Conversion
September 9 · 42min find the promo
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Colonel Sheppard begins to undergo a disturbing physical transformation after being exposed to Beckett's anti-Wraith drug.
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S02E09 Aurora
September 23 · 44min find the promo
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When the team finds an Ancient warship adrift on the edge of the galaxy, its crew still alive, Colonel Sheppard enters their virtual reality stasis to communicate with them.
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S02E10 The Lost Boys (1)
September 23 · 44min find the promo
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The team is captured by the missing Lieutenant Ford, who is now leading a group of young men who are taking the Wraith enzyme -- and who wants the team's help in a suicide attack against a hive ship.
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S02E11 The Hive (2)
November 16 · 44min find the promo
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Colonel Sheppard and his team find themselves prisoners of the Wraith following Ford's attack on a hive ship. Dr. McKay goes to great lengths to help them.
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S02E12 Epiphany
November 28 · 44min find the promo
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Sheppard finds himself on a planet where time passes more rapidly, with no way to contact his team or return to Atlantis.
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S02E13 Critical Mass
December 5 · 44min find the promo
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When an operative of the Trust plants a bomb in Atlantis, the team must find a spy within their own ranks before the Wraith arrive and discover the city.
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S02E14 Grace Under Pressure
December 10 · 44min find the promo
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When Dr. McKay is trapped underwater in a sinking Puddle Jumper, his only chance for survival may be an hallucination of Samantha Carter.
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S02E15 The Tower
December 19 · 44min find the promo
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The team finds a world that possesses Ancient defense technology, where Colonel Sheppard finds himself a pawn in the rivalry between the heirs to the throne.
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S02E16 The Long Goodbye
January 2 · 44min find the promo
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The team discovers two pods that contain the minds of alien beings, who take control of Weir and Sheppard's bodies to continue their personal war.
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S02E17 Coup D'etat
January 9 · 44min find the promo
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After a team from Atlantis goes missing, the expedition finds itself in the middle of a Genii coup.
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S02E18 Michael
January 16 · 44min find the promo
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An amnesiac young Lieutenant in Atlantis suffers from disturbing nightmares that he is a Wraith, only to make a shocking discovery about himself.
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S02E19 Inferno
January 23 · 44min find the promo
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Sheppard's team meets a civilization about to be destroyed by a super-volcano, and is trapped there when the Stargate is destroyed during the evacuation.
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S02E20 Allies (1)
January 30 · 44min find the promo
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Michael and his Wraith faction arrive at Atlantis to propose an alliance, hoping to use the retrovirus to transform their Wraith enemies into prey.