Kaya's village is preparing for the powerful winter Spirit Dances when an injured stranger arrives. The young woman doesn't speak, and no one can reach her but Kaya's beloved dog, Tatlo. Who is the stranger, and why is she so silent and alone? Will she bring harm to the village—or take Tatlo away from Kaya? Kaya searches for clues about the woman—but she must look deep inside her own heart to truly understand her. When she does, Kaya not only solves the mystery but takes a brave step toward growing up.

Kaya's people tell a story about unusual silver stallions of long ago that had powerful medicine—a strong connection to the spirit world. Now Kaya's blind sister, Speaking Rain, has dreamed of a stallion like none she's ever met. Then the two girls come upon a silver stallion in the woods. Could he be a Ghost Wind Stallion of legend?