It's been a year since an avalanche sealed the Phantom's herd in Wild Horse Valley. They're living on dwindling resources, when a sudden thaw allows the wild horses to escape through a secret tunnel.
Back on their home range, they gallop toward a trap full of tasty feed. The corral sits on land belonging to convicted felon, Linc Slocum. His plan to build a fly-in golf course does not include wild horses, so he's working with BLM to strip the lands bordering Riverbend Ranch of mustangs.
Samantha Forster wants to work with her best friend Jen Kenworthy, her pal Jake Ely and his brother Seth to free the mustangs legally, but when the Phantom protects his family by facing a hotshot helicopter pilot who only cares about his paycheck, how far should Sam go to help the horse she loves?