Stargate: Atlantis - Full Series Information, Trailer & IMDb Reviews
Watch Stargate: Atlantis Season 3 Episode 20 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.
After learning the Asurians are building a fleet of ships, Earth sends its newest ship, the Apollo, under the command of Colonel Abe Ellis to initiate a preemptive first strike to stop them from attacking Atlantis or worse, Earth itself.