The Feather and the Lamp

A magic lamp should have been a gateway to Imperceptibility's every desire... So how did she end up in the underworld covered in slobber from a three-headed dog? And then there's capture by fanatical priest-mercenaries, sacrifice to a quantum dragon, and getting trapped in a chicken coop. Will she ever find her way back home? More important still, what's a goose feather got to do with any of this?