Skin Deep (слэш)

Stephen and Tony's quiet time is interrupted by the arrival of a Nebula Worm, a giant, reality-munching monster that gnaws its way through the Multiverse. In an attempt to evict it from their world, Stephen is splattered with psychic goo that brings his thoughts to life.
Unfortunately for them, the last thing he was thinking about was a series of books called The Dresden Files, about a wise-cracking wizard who defends Chicago against monsters and magicians.
Now they must defend themselves against threats to their world, their reality - and their relationship.