After much plotting and scheming (or blind fumbling, anyway) and a couple conversations with Lana, we learned the following:

Wally Wingo, Power of Comic Books, had been taken over by the Excrucians, destroyed Lana's universe and was going to destroy ours unless we could stop him.

Either that or Lana was a tool of the Excrucians and was trying to trick us into killing Wally Wingo for her.

The difficulty was that, although we were sure one of those things was true, we didn't have any idea which one was true. And, of course, the two possibilities would require diametrically opposite reactions on our part.

Fortunately, while we were in a New York bar trying to figure out how to tell if Lana was the hero or the villain of the piece, she walked in and invited herself over to join us.

And here we lucked out, because the one thing we had failed to consider was that Lana Lang was from the superhero universe. Stalling for time, we told her that she and Wally would both be at "the comic book convention we were holding next week" (with an under-the-table kick to Time Guy) and all would be revealed there.

At which point Lana, in true comic book super villain fashion, snorted "fine, you got me this time", revealed her evil plan, and stormed off in a huff. I love it when a non-plan comes together.