Wild Hearts

Ariana is about to lose her small farm and her horse Yanky is getting to old. When she takes him for a routine ride something scares him and gallops away leaving her behind. A horse comes out and turns out to be a unicorn. She wants to keep her but letting the unicorn go back to the clouds means death but the god Hippona. But something happens and changes Ariana, the unicorn and Yanky forever.