Plot summary
Searching for the missing Athosians, the team finds Davos, a man of a primitive civilization called the Vedeenans. Davos can see into the future and bears news about an attack on Atlantis. Meanwhile, the Replicators introduce a new tactic in their war with the Wraith: the extermination of their food supply. As human worlds come under attack, the Wraith warrior captured by Kolya a year ago, nicknamed 'Todd', proposes an alliance with Atlantis to shut down the Replicators' attack code.
Credits
Adapted from Wikipedia contributors, Stargate Atlantis season 4. HTML formatting and reference markers removed.