Based on the animated Netflix series: Spirit riding free.

"Lucky, Pru, and Abigial couldn't be more excited! Each Frontier Fillies herd is holding a fund-raiser for a very special Jamboree, and whichever team raises the most money will win the Golden Horseshoe! The PALs are sure the trophy will be theirs after they discover an orchard full of delicious apples plus a new friend named Vida! In exchange for her family's harvest to use in a bake sale, Vida gets riding lessons from Lucky and her friends. But when the PALs return to Miradero, it turns out Vida isn't the new friend they thought..."--Back cover.