In Dreamland, the 7 providences are each dreamed by one of the 7 Sleepers. When a sleeper is replaced by a new sleeper, the land and people undergo a Changeover which alters the very fabric of existence.
But really, that's just another day in dreamland, because the land and people change based on the whims of the dreamers anyway. One moment you might be a tall blonde woman, a few minutes later--if you happened to cross into the right area or take on a certain mood--you might be an otter.
The exception is Roan, who never changes. He is unusual in that his appearance remains the same, not just over days, but over years. He's the king's investigator, and childhood sweetheart with the princess.
When scientists at the palace create an Alarm Clock and declare their intention to conduct an experiment to wake the Sleepers, Roan is put in charge of the expedition to chase down the scientists and prevent the Alarm Clock from ringing....
This book reminded me a lot of the Xanth novels that I read as a teen, but I wasn't nearly so enthralled with Dreamland. (I remember not being a huge fan of the Mythadventure novels at that time either, so this may just not be a match for me.) In some ways it also reminded me of Discworld, but not as funny.
It is a fun concept, and the whimsical nature was mildly entertaining.
Yet... when anything can happen, nothing is surprising. I just got frustrated that it took the entire book for all that stuff to happen.