Stiles has a preference for written porn. He also has a thing for Derek's voice. So when Derek finds his erotica collection, this is clearly either the best or the worst thing that's ever happened to him.

In which Derek has been invited to the Greater Pacific Northwest Alpha Symposium (that's not what it's called, Stiles, stop saying that), and showing up unattached would mean an arranged marriage. When the rest of the pack objects, he agrees to let Stiles come along to pose as his mate. Derek is reasonably sure that he's not going to make it out of this weekend alive.