A village is tormented by a Yoma, which is a demon that has disguised itself as a human it has eaten. As a last resort the Chief of the village has ask for the help from a Claymore, who are feared as they are half human, half Yoma. Raki is a young boy who has found an interest in the Claymore and he begins to follow her about until later when he discovers who the Yoma is.

Rabona the Holy City that does not allow the entry of unnatural beings is being preyed upon by a Yoma and as a last resort, have to disobey their own laws and called for help. So Claire now has a job to do but it will be different from the usual Yoma hunting, it's more of a covert operation and she has to suppress her powers to do so. During her searches Claire happens to run into 2 soldiers on patrol, but they only seem to get in the way of her job. After she manages to lose them, Claire faces the Yoma which happens to be an extremely strong one known as "Voracious Eater".