The arrival of Zoe's mischievous cousin complicates the Bright Fields gang's attempts to impress the new mayor.

Pin leads the charge to find a skittish wild horse before the mayor does. The first Breakfast Club meeting leaves some riders champing at the bit.

Zoe and Gaby try to figure out what's wrong with Ariel. Marcus faces obstacles ahead of his trainer exam, and Mia undermines Susie.

The gang gallops into action after inviting the mayor to tea at the castle. As they train for tryouts, Zoe and Gaby grow increasingly competitive.

When Winnie's snobby schoolmates show up at Pony Camp, Zoe does everything possible to keep them busy. Meanwhile, Marcus pushes Mia to face her fears.

Gaby's need to win at tryouts jeopardizes her friendship with Zoe. Jade seeks answers when she loses track of the wild horses.

As Zoe and her friends narrow down the list of suspects in their search for the wild horses, Pin becomes more and more unwell.

Jade and Becky go sleuthing at the castle, Zoe makes a decision about her future, and Callum's obnoxious behavior gets on Gaby's nerves.

Zoe reaches out to her friends for help, Aaron lives out his cowboy dreams, and the gang finally solves the mystery of the wild horses' disappearance.