A brave yet shy boy by the name of Navia strives to defeat the man-eating Spirits, but don’t be fooled by the appearance, these vicious beasts are disguised as flocks of red birds. Every year a village will be raided by these demons, not a soul will remain. Luckily a strong proud wall stands 1000 feet to protect those who live in it. Navia questions his purpose in life and where he stands. His mentality is already an obstacles to face, is fighting against the beasts more significant to him rather than his mental health?