Exactly what it says on the tin, apparently:
Join Jonna and her community in helping an alien procure horses and other animals to take back to his world. Romance and humor are abundant as well as a fair amount of horse sense. The book opens with Jonna training a horse and continues on as an alien spaceship lands in a wooded area nearby.
519 pages of that.

“Off-world horses….should drag this cover a-way!”
I feel like we should have some sort of “Cruelty to Animals” tag when an innocent creature like this horse ends up on a bad cover.
You should talk to Wolfie…
Someone needs to stage an intervention with that poor lupus.
This horse has all four hooves solidly on the ground.