A wild and dangerous mountain setting and a daughter who lives, breathes and sleeps horses is a recipe for trouble for ranch owner, Sandy Scott. But Kirstie is undaunted by her mother's warnings. She's at her happiest riding the trails through the tall forests and deep canyons of the Meltwater Range . . .
It's Kids' Week at the ranch. Kirstie befriends Lacey, a loner with a natural talent for riding. Besotted with her horse, a blue roan gelding called Gunsmoke, Lacey breaks ranch rules and rides off trail alone. When she fails to return, Kirstie fears the worst; either Lacey has had a terrible accident, or she's run away - unaware that a heavy storm is brewing . . .