When Art's mother is accused of witchcraft and captured, she is determined to get her back - at any cost.

Twelve-year-old Art lives in a small village in Scotland. Her mother has always made potions that cure the sick, but now the townspeople say she is a witch. One cloudless night, Art's mother is arrested and taken to England.

Art mounts her horse, taking a sword, a tightrope, and a herbal recipe book, and begins a journey through wild forests, using nature's signs and symbols to guide her. But will she spot the signs from the omens? Will she reach her mother, before it's too late?