EPISODE

1. Adrift

When Rodney McKay realizes Atlantis has started shutting down artificial gravity and collapsing protective shields to compensate for a damaged power system, he turns off all non-essential systems. But when the problem persists, McKay is forced to collapse the shield to the point where it is only protecting Atlantis' main tower, leaving the rest of the city exposed to space.

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THIS ENTRY’S STORY

Plot summary and ending

Spoilers ahead. Coverage follows the scope labeled below.

Complete story — includes the ending

Escaping from the Replicators' satellite weapon, Atlantis encounters further problems as the city's shield begins to severely deplete their over-taxed ZPM. With limited resources, the team undertakes a myriad of repairs, whilst Dr. McKay and Dr. Keller are forced to make a tough decision when Elizabeth Weir is injured. Ultimately, they are forced to reactivate Weir's Replicator nanites to save her life. While the city is being repaired, they run too low on power to make it to hyperspace and remain stranded in space. 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.

Sources and content license

Source and revision history · Adapted from Wikipedia contributors, Stargate Atlantis season 4. HTML formatting and reference markers removed. · Content license