New girl in town Kristy Moore is desperate to fit in. So, when she lands a job at Mill Farm Stables, she hopes she’ll make friends with the children who keep their ponies there.

When she’s given the cold shoulder by their ringleader, bossy Norah Bergman, she seeks solace by befriending the mysterious and mighty black Percheron, Cassius.

To her surprise, Norah and her friends invite Kristy to join their quadrille team.

Fate deals them one disaster after another and Kristy begins to wonder if they are destined to fail.

As the day of the quadrille draws near, can Kristy and her new friends overcome adversity and triumph against all odds?

And will Kristy lose the one thing she loves more than anything – her beloved horse Cassius?