Thomas Kindercook and the House at the Edge of Time

If it rejects the bond, it will reject the host, and the host will die.
Four years have passed since Thomas Kindercook, boy wizard was tossed through a portal to the distant world of Alumia. Four long years since he returned to Earth with his fiancée the dragon princess, Alanna. Things should be settled. Thomas should be happy. All should be well.
But it's not.
For all the time that Thomas and Alanna are together, they may as well still be worlds apart, and now there is someone new trying to charm the dragon princess.
And this isn't even the worst of his problems. Thomas is ripped away from his world to a land where he will need to face the most dangerous foe he has ever encountered. The fate of Earth, Alumia and more are on the line, and it's up to Thomas to find a way to save them all.