In a village hidden away in the mountains a terrible incident occurs, however the one to stop it is far from appreciated by the villagers. Cast away by the village, the boy is taken in by a temple in the capital. The constant breaking of rules troubles the other monks and they put more surveillance on the boy. At the festival the boy acquires an oni mask that he can use to get back at the monks for their constant eyes on him. However the boy’s attempts at scaring the monks takes an unexpected turn.