How I Saved the World (Or So They Told Me)
Pen's uncle is a cop, and ever since she was able to crawl, she was being versed in the arts of stranger danger (and possibly a few karate, ninja-like moves). So when some unknown guy begins to chat her up through her car window, and then goes on to watch her as she drives away, she does what she's been taught: she goes to the cops.
However, this turns out to be the least suspicious thing to occur in the following week. A new boy at Penelope's school invites her over to dinner, and suddenly she's being informed that she's involved in a prophecy (which was written on, excuse me, is that toilet paper?) to help stop an evil mastermind named Sir Dastardly and reclaim the prized Purity Crystal.
Pen's reaction? (Well, after she goes a little crazy with her stun gun.) For reasons she still can't explain, to help him and his family take down Sir Dastardly and-so they tell her-to help save the world.
Well, not all evil plots end the way we assume, right?