With still no trace of the Athosians, Teyla (Rachel Luttrell) requests an off-world visit to meet with a seer, Davos (Martin Jarvis), who may be able to help her find her people. After convincing even McKay (David Hewlett), the most skeptical of the team, of his psychic abilities, an ailing Davos travels back to Atlantis to receive medical treatment. While there, he has visions of tragic and devastating consequences for Atlantis. Meanwhile, the Wraith bring a startling proposal to Lt. Col. Sheppard (Joe Flanigan) along with information that the Replicators are finding new ways to destroy human civilizations throughout the galaxy with devastating results. The only way to stall their attacks may be to collaborate with the Wraith in a dangerous partnership. Adding to the stress on Atlantis is the arrival of Agent Woolsey (Robert Picardo) who has been assigned to observe and review Col. Carter (Amanda Tapping) in her newly appointed position as leader of the city.