is the 12th episode of the first season of Stargate Atlantis . In this episode, a mission to investigate an ancient weapons platform turns into a desperate survival situation against a long-dormant enemy. Plot Summary
: This is the first time McKay refers to Sheppard as "Captain Kirk," a joke that becomes a series staple.
: This episode is noted for Dr. McKay's growth; he chooses to join the fight alongside Sheppard rather than staying in safety.
The team finds that a single Wraith survivor has remained alive for millennia by entering hibernation and periodically feeding on the ship's cargo of hibernating humans. This "Defiant One" is significantly stronger than typical Wraith due to its desperate survival tactics and is eventually able to seize control of the team's Puddle Jumper .
: The planet features yellow, firefly-like energy beings similar to those seen in the Stargate SG-1 episode "Prodigy".