Stargate Atlantis

Season 4

TV-PG

85%

With changes in leadership and new allies, the team continues to battle the Wraith and confront new existential threats. Personal dynamics shift as members struggle with loss and make significant choices that shape the fate of Atlantis and its mission in the Pegasus Galaxy.

Where to Watch Season 4

20 Episodes

Adrift (2)
E1
Adrift (2)With a damaged ZPM, and diminished hopes of survival, the Atlantis team finds themselves stranded in the middle of empty space with hardly any time before they run out of power completely. Dr. McKay is challenged to the max as he tries to find a way to save Atlantis from its doom. Meanwhile, Dr. Keller races to treat Weir's increasing head injuries, but the only answer she can come up with could have grave results for everyone on board.
Lifeline (3)
E2
Lifeline (3)The Atlantis team, along with Weir and now with the ability to make large hyperspace jumps in only a puddle jumper, must now journey to the replicator home planet to steal one of their many ZPMs to bring the city back to life, and finish the journey to their new planet.
Reunion
E3
ReunionWhile on a regular mission, Ronan runs into some Satedan friends from his past. As old emotions start to return, new thoughts come with them, one of which involves leaving Atlantis. But could danger be lurking just around the corner?
Doppelganger
E4
DoppelgangerDuring an off-world mission Colonel Sheppard unknowingly becomes host to an alien entity, which infects others in Atlantis and afflicts them with terrifying nightmares.
Travelers
E5
TravelersSheppard is kidnapped by a group of people living in a starship fleet. They were telling him that they were living on these ships for a long time, due to the war with the Wraith. He was forced to help them make an Ancients' ship fly. Sheppard tricked them and flew with the ship, and 3 of the kidnappers.
Tabula Rasa
E6
Tabula RasaWhen a virus causes amnesia in everyone except Teyla and Ronon, the Atlantis team must work together to find a cure before their memories fade entirely.
Missing
E7
MissingDuring a visit to New Athos, Teyla and Dr. Keller find themselves on the run from a primitive tribe of warriors.
The Seer
E8
The SeerThe 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 the Replicators.
Miller's Crossing
E9
Miller's CrossingRodney McKay goes in search of his sister on Earth after she is kidnapped by the head of a powerful corporation.
This Mortal Coil (1)
E10
This Mortal Coil (1)A mysterious drone crashes into Atlantis, indicating that the Replicators may have found the city. But when Elizabeth Weir appears, the team realizes that the probe is just a part of a bigger mystery.
Be All My Sins Remember'd (2)
E11
Be All My Sins Remember'd (2)With a plan to potentially extinguish the Replicator threat, the Atlantis team must seek an alliance with a fleet of Wraith ships.
Spoils of War
E12
Spoils of WarThe team finds their former Wraith ally's hive ship drifting in space, which leads them to a secret project that could turn the tide of a civil war.
Quarantine
E13
QuarantineAn automated lockdown traps Atlantis personnel in various parts of the city, each of them hoping the others will come to their rescue.
Harmony
E14
HarmonyRodney and Sheppard are on a diplomatic and trading relations mission and are asked to help out. They need to take her on a quest to be queen. The right of passage is normally performed alone but they are concerned for her well-being and therefore ask Rodney and Sheppard. They set out on the pilgrimage to the temple of Larus. What don't know, is that there's an old foe out to get them.
Outcast
E15
OutcastColonel Sheppard receives a message from Earth that his father had a heart attack and passed away. He travels to Earth and goes to the funeral, where is he is approached by a girl named Ava Dickson. She knows all about the nanite project and takes Ronon and Sheppard on a trip to a lab.
Trio
E16
TrioMcKay, Carter, and Keller are trapped in an underground chamber while on an off-world mission, with no apparent means of escape.
Midway
E17
MidwayTeal'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 in order to reach Earth.
The Kindred (1)
E18
The Kindred (1)As a mysterious new illness sweeps through the Pegasus Galaxy, Teyla is convinced by a vision that the father of her child is trying to communicate with her.
The Kindred (2)
E19
The Kindred (2)The team is shocked when an old friend, believed to be dead, miraculously returns to them. Teyla plans an escape from Michael's captivity.
The Last Man (1)
E20
The Last Man (1)Sheppard returns to Atlantis after a mission and finds the city abandoned, all systems dead -- and instead of ocean, sand dunes as far as the eye can see.