Using the list given to them by Weir, the team go to the planet Dagan, where they may find a ZPM, capable of restoring Atlantis' shield. On the planet, they find that a mysterious group known as the 'Brotherhood' guard the ZPM on the planet and are willing to help them find it.

However, soon the Genii appear and hold the team hostage, and want the ZPM for themselves. Matters worsen when back on Atlantis, they discover that three ships are on their way to Atlantis.