This animated series is telling about unusual friendship and adventures of a girl named Lucky and her defiant horse named Spirit. Our heroine has lived her childhood in city. Then her parents relocated to a small remote settlement called Miradero. Here her father wanted to build a railway. Lucky, used to being in city comfort, was, to put it mildly, not happy about the relocation. But everything has changed when she saw him. Wild and unbridled Spirit that does not let anyone come close to him. They got along immediately.