Season 7 Episode 01 - Fallen (1)

Jonas works on the location of the City of the Lost and gets a fix on a planet – when they go there, they find locals who have taken in an amnesiac Daniel Jackson. They bring him back to SGC and get reports that Anubis is triumphing with the Eye that Jack turned over to him (in Full Circle). Daniel determines the planet isn't the location of the Lost City that pre-amnesiac Daniel said they needed, much to the team's dismay.

They finally come up with a plan: Jonas and Daniel create a fake tablet to lure in Anubis while Jack and Sam fly the F-302 through Anubis' shields via hyperdrive and destroy his crystal power core via a power shaft, then call in Lord Yu. Jonas and Daniel sneak on board Anubis' ship via teleport-rings to access the computers and get the shaft's location. Things go awry when Yu backs out (taking Teal'c prisoner) and Anubis figures out it's a trap and targets the planet's Stargate. Jack and Sam get the info and destroy the power core in the nick of time but Jonas gets captured and Anubis uses the mind-probe to find out about Quinn's home planet of Kelowna and goes there to obtain its Naquadria.