YEE-HAW! Willa is back in this standalone sequel to Horse Girl. This time, she tackles summer camp, new and old frenemies, and worst yet: a horse that's mysteriously gone missing.

Seventh-grader Willa is head-over-hooves when she finds a secret note inviting her to Juniper Ranch-a sleepaway camp that's all about horses. The camp promises trail rides, horseback swims, and "ghorst" stories, plus tons of new horse-girl and (gasp!) horse-boy friends. Even better? Willa's pals from Oakwood Riding Academy-including her sworn frenemy, Amara-are all coming along for the fun.

But when Willa makes a dangerous mistake and a beloved steed goes missing, everyone at Juniper Ranch is suddenly a suspect. Wills isn't sure who to trust (including herself) as she tries to figure out who's behind the mysterious horse napping. And where they might be lurking. And just how she'll save her "forever herd" before a frightening storm rolls into camp. Gulp!