Wild Blue: The Story of a Mustang Appaloosa, by acclaimed author Annie Wedekind, follows Blue, a roan filly, the color of rain, who stands out for her distinctive coloring and her intelligence. Surrounded by her beloved family, including her gentle sister Doe, and protected by her father, the band stallion, Blue lives a life both harsh and beautiful in the rugged terrain of an undiscovered habitat. That all changes though, when Blue and Doe are suddenly, inexplicably captured by rogue cowboys, setting in motion a chain of events that inadvertently threatens the very survival of their hidden, secret herd.