There's no such thing as an ordinary horse.

Sometimes the defining moments of your life come down to a single decision. For Erina, it all began with a crash. Not that she had meant to crash the interplanetary shuttle (there had been a small disagreement with an asteroid) but crash it diid.

Now she finds herself surrounded by creatures unlike any she has ever seen, in a place that the maps say doesn't exist, and there are trees everywhere.

When Erina then meets a solitary horse in those mysterious woods, even she can tell that there is something special about the proud stallion. Trouble is, Erina knows only slightly more about horses than a fish does about QDE Engineering. She still needs to find a way home. And there is possibly something in the dark that wants to eat her. What's a girl got to do?