Michael Kenmore has infiltrated Atlantis with an army of his Hybrids, and closes off Stargate Operations and the surrounded levels to prevent anyone from taking it back. His plan; take…

While on a mission, Lt. Colonel John Sheppard’s team inadvertently brings a mysterious entity to Atlantis. They soon learn that the entity is nothing more than Dr. Elizabeth Weir, who…

Dr. Rodney McKay is infected with the Pegasus equivalent of Alzheimer’s disease, known as Second Childhood, a common illness among the elderly in the galaxy. The only way to save…

Dr. Carson Beckett is called in to help a team investigating a lab that once belonged to Michael Kenmore. But soon, they realize that a group of experiments that even…

The Atlantis expedition has a plan to remove the Wraith’s dependence on feeding to use an experimental gene therapy from Michael’s database. However, in order to convince the Primary, the…

When a mysterious alien organism takes Dr. Jennifer Keller as its host, the newly revived Dr. Carson Beckett and the crew desperately search for a serum to save her from…

Ronon Dex is captured by Tyre, who wants to hand him to the Wraith in order to maintain his role in their circle. However, when the deal turns sour, and…

The fate of Tokugawa’s world hangs in the balance as Yagyu Jubei is sent on a mission to discover what happened to 10 of the shogun’s spies that never returned….

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While on personal leave on Earth, Sheppard and Ronon learn that scientists have engineered a human-form Replicator — who is now on the loose.

Teal’c visits Atlantis to counsel a headstrong Ronon, who is up for review by the I.O.A. But the two must work together when the Wraith invade the Midway space station…

The team is shocked when an old friend, believed to be dead, miraculously returns to them. Teyla plans an escape from Michael’s captivity.

During an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.

During a visit to New Athos, Teyla and Dr. Keller find themselves on the run from a primitive tribe of warriors.

The team meets a man with extraordinary prophetic abilities, who gives them a dark prediction about Atlantis’s future. The Wraith seek a new alliance with Atlantis in their war with…

Rodney McKay goes in search of his sister on Earth after she is kidnapped by the head of a powerful corporation.

When a group of Ronon’s people enlist the team’s help in raiding a Wraith weapons facility, Ronon reconsiders whether his future lies in Atlantis or with his friends.

Player follows a righteous, self-controlled and rather boring lawyer (Bjerg), who is sent to Nice on a divorce case. As he arrives, everything starts go wrong – he is cheated…

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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.

The team finds Lucius Lavin manipulating the people of another hapless planet, using Ancient technology to pose as an invincible hero.

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.

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.

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.

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.

Sheppard’s team meets an obnoxious man who is adored by all thanks to a secret that he carries — and who has an unexpected affect on them.

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.

Colonel Sheppard finds himself the prisoner of a Genii commander, along with a desperately hungry Wraith who has been separated from his hive.

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.

Sheppard and Ronon are influenced by a mind-altering device created by the Wraith while on a mission to rescue a lost team.

A philandering husband unknowingly falls back in love with his wife over the phone when she pretends to be another woman.

Michael and his Wraith faction arrive at Atlantis to propose an alliance, hoping to use the retrovirus to transform their Wraith enemies into prey.

An amnesiac young Lieutenant in Atlantis suffers from disturbing nightmares that he is a Wraith, only to make a shocking discovery about himself.

After a team from Atlantis goes missing, the expedition finds itself in the middle of a Genii coup.

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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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.

When Dr. McKay is trapped underwater in a sinking Puddle Jumper, his only chance for survival may be an hallucination of Samantha Carter.

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.

The Daedalus is infected by a Wraith computer virus, while members of the expedition hope to return to Earth.