After Elixabete Luz witnesses a startling lunar event in 1178, she struggles to understand the sacred stones and their healing power. She fights against her intended marriage to a farmer as she has found a new love in one of the local hunters.

But when one of the monks at Abadía del Torcal blames her for their abbot’s strange behavior and condemns her as a heretic, she must find the strength to overcome the shocking betrayal and save herself from the worst fate of all: burning at the stake.