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Season guide

Stargate Atlantis: Season 3

20 episodes Premiered Jul 13, 2006 Updated Oct 4, 2026

Role: Meticulous television and film archivist. Task: Produce a JSON object for Stargate Atlantis Season 3. Constraints: Use ONLY provided SYNOPSIS and SOURCES. No invented/guessed titles, names, dates, etc. If a detail is not in the material, omit it. Write original, neutral, encyclopedic prose in plain text. No markdown, no asterisks, no headings, no bullet points in the prose. JSON keys: overview (160-220 words),

Previously on Stargate Atlantis

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ The team faces escalating conflicts with both old and new adversaries, including the Wraith and a deadly new faction.
  • ⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • ⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • ⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
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Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for Stargate Atlantis Season 3.
Constraints:
Use ONLY provided SYNOPSIS and SOURCES.
No invented/guessed titles, names, dates, etc.
If a detail is not in the material, omit it.
Write original, neutral, encyclopedic prose in plain text.
No markdown, no asterisks, no headings, no bullet points in the prose.
JSON keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Output: Valid JSON only.
TMDB Season Synopsis: "The team faces escalating conflicts with both old and new adversaries, including the Wraith and a deadly new faction. The discovery of a potential game-changing technology introduces new ethical dilemmas, while relationships within the team are tested under growing pressures."
Source [1]: Title "Stargate Atlantis (2004)". Mentions "A new gate will open. A lost city will rise again." Mentions "With the Ancients' city of Atla..." (cut off).
Source [2]: Cast/crew info.
Source [3]: "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' de..." (cut off).
Source [4]: Creators (Brad Wright, Robert C. Cooper), Running time (60 min), Country (United States).
Source [5]: Follows the cliffhanger episode on Stargate SG-1's seventh season finale "Lost City". SG-1 found an outpost made by the race known as the Ancients in Antarctica. Mentions "New Order".
Overview Construction:
Goal: 160-220 words.
Content: Season 3 narrative arc based only on the TMDB Season Synopsis.
Drafting:
The third season of Stargate Atlantis follows the team as they face escalating conflicts with both old and new adversaries. These threats include the Wraith and a deadly new faction. During this period, the discovery of a potential game-changing technology introduces new ethical dilemmas for the characters involved. As the season progresses, the relationships within the team are tested under growing pressures. The narrative explores the consequences of these technological advancements and the ongoing struggle against various enemies

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

20%
80%
Mytharc (4): Crucial lore & season climaxes
Core (16): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

No Man's Land (2)

Jul 13, 2006 · 43 min

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.

S3·E2 Core

Misbegotten (3)

Jul 20, 2006 · 44 min

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.

S3·E3 Core

Irresistible

Jul 27, 2006 · 42 min

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.

S3·E4 Core

Sateda

Aug 3, 2006 · 42 min

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.

S3·E5 Core

Progeny

Aug 10, 2006 · 44 min

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.

S3·E6 Core

The Real World

Aug 17, 2006 · 42 min

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.

S3·E7 Core

Common Ground

Aug 24, 2006 · 42 min

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

S3·E8 Core

McKay and Mrs. Miller

Sep 7, 2006 · 44 min

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.

S3·E9 Core

Phantoms

Sep 14, 2006 · 42 min

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

S3·E10 Core

The Return (1)

Sep 21, 2006 · 42 min

The Atlantis expedition is stunned to learn that a ship full of Ancients is returning to reclaim their lost city.

S3·E11 Core

The Return (2)

Nov 19, 2006 · 42 min

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.

S3·E12 Core

Echoes

Nov 26, 2006 · 42 min

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.

S3·E13 Core

Irresponsible

Dec 3, 2006 · 42 min

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

S3·E14 Core

Tao of Rodney

Dec 10, 2006 · 43 min

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.

S3·E15 Core

The Game

Dec 17, 2006 · 42 min

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.

S3·E16 Core

The Ark

Jan 7, 2007 · 42 min

The team discovers the last of a civilization in suspended animation, whose survival is at risk when their station is critically damaged.

S3·E17 Mytharc

Sunday

Jan 11, 2007 · 42 min

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.

S3·E18 Core

Submersion

Jan 14, 2007 · 42 min

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.

S3·E19 Mytharc

Vengeance

Jan 28, 2007 · 44 min

The Atlantis team investigates the disappearance of one of their allies, only to find an old enemy engineering a race of powerful monsters.

S3·E20 Mytharc

First Strike (1)

Feb 4, 2007 · 42 min

An unstoppable energy weapon leaves Atlantis under siege after Earth launches a preemptive attack against a very powerful enemy's homeworld.

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