he team has arrived on Dagan, one of the gate addresses with ZPM's the old Weir gave them. The people from Dagan know about this device they call Potentia. Apparently the Ancients gave a secret Brotherhood the order to keep it safe from the Wraith until it was reclaimed by their descendants. The location of the device is unknown however, since the Brotherhood was wiped out entirely in a culling. Archaelogists have tried for centuries to solve the puzzle and three out of nine key stones have been found recently The team tries to find the rest. Some Genii however, have taken interest in their activities on Dagan and of the archaeologists helping them is starting to have doubts. Meanwhile a console on Atlantis starts behaving strangely. Dr. Zelenka finds out a deep space scanner has activated itself. He makes a disturbing discovery.

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