In part 2 of the Tinker series we are right at the point that "Tinker" leaves off - Tinker is trying to adjust to her new life and having very strange dreams and Windwolf is navigating tricky political waters with the elves and the humans. I guess that the book is named Wolf Who Rules because this book is more about his elf world than Tinker's human one and much of the book has Tinker having to flail about and find her way really quickly and without much instruction. Unfortunately in the end I felt shocked because I was actually disappointed in this book compared to Tinker. Which is a big deal because I love this author and I love her plots and amazing ideas (interdimensional Pittsburgh? elves? oni? spaceships? - I love it), but I felt like I expected Tinker to be take charge like she was in book 1 that seeing her out of sorts for what felt like much too long in book 2 just made the story drag. I think trying to get the plot to fit in with the strange Alice in Wonderland-ish dream and a Wizard of Oz-ish dream that Tinker has just didn't work. Still - as usual Spencer gets big points for worldbuilding.
This sequel picks up immediately following "Tinker". Although there is serious development of the various components of this world (elf clans structure & lineage, using magic, tengu & oni physiology, etc) the overall plot arc of this book is whimsical at best & just plain silly at worst.