Needing a new ZPM, Colonel Sheppard and his team, joined by Elizabeth Weir, launch a daring mission to the Replicator homeworld to steal a new one while Colonel Samantha Carter and Doctor Bill Lee aid the Apollo in searching for the missing city. McKay, Sheppard and Zelenka realize that they have a Puddle Jumper with a hyperdrive capable of reaching the nearby Replicator homeworld and decide to raid the planet for a new ZPM. While the city is being repaired, they run too low on power to make it to hyperspace and remain stranded in space. Ultimately, they are forced to reactivate Weir's Replicator nanites to save her life. Keller are forced to make a tough decision when Elizabeth Weir is injured. With limited resources, the team undertakes a myriad of repairs, whilst Dr.

Main article: List of Stargate Atlantis episodesĮpisodes in bold are continuous episodes, where the story spans over 2 or more episodes.Įscaping from the Replicators' satellite weapon, Atlantis encounters further problems as the city's shield begins to severely deplete their over-taxed ZPM.

Artlantis 4