Kelly is so unhappy. Why does her big sister always bully her these days? Katelyn used to be so nice, but that was before she met Jessica, one of the most popular girls in school…Kelly seeks comfort in her beautiful pony Happy. She loves him to pieces, and nobody can take away the joy she feels on their cozy rides through the woods. But the woods are changing. Something sinister is growing there… in the one part of the forest where Kelly’s dad told her she must never go…