Book I: Modal Shift. Aeolian's War, #1

Jason Garrett is a writer, living his ideal life in a remote cabin outside a small town in Colorado. His life is fine, if a little boring. A sudden storm hits the area and brings with it the arrival of the most beautiful woman he's ever seen. Her name is Aeolian and she is from the world of Atherra, chosen heir to the throne, and is being pursued by a group attempting to kill her so the man that had her father killed can retain his claim to the throne.
She asks for Jason's help and he guides her through the world to reunite her with her group of protectors, defeat those pursuing her, and return home to continue her quest to unseat the usurper king.