On a distant moon, Sheppard, McKay, Ronon Dex and Teyla find an elaborate subterranean base. The technology is anything but up to date and the base seems to be abandoned, until McKay decides to restore power. When he does so, a scientist materializes and it would seem that he had developed a means of using transporter technology to store a person's essence. The technology was developed to save as many of their people as possible from the Wraith culling and there are several thousand of them in stasis. As the decrepit station begins to fail, Teyla is pulled into stasis by one of the surviving scientists forcing Sheppard to risk his own life to save all of them.
—garykmcd