Uprooted

"Our Dragon doesn't eat the girls he takes, no matter what stories they tell outside our valley. We hear them sometimes, from travelers passing through. They talk as though we were doing human sacrifice, and he were a real dragon. Of course that's not true: he may be a wizard and immortal, but he's still a man, and our fathers would band together and kill him if he wanted to eat one of use every ten years. He protects us against the Wood, and we're grateful, but not that grateful."

Synopsis from Open Library.