How did Season 7 end anyway? I can't even remember if I caught it or not.
Lex discovered the Fortress and using the device left behind by Jor-El, he rendered Clark powerless and in the process, caused the destruction of the FoS. The final scene was of the two of them being buried under the rubble.
In other news, Chloe was arrested by Homeland Security for being Super-Hacker.