《Sire》是一部以韩国民间宗教 Samchil (Saire) 为背景的不祥而又奇幻的悬疑恐怖片，该宗教在 21 天内禁止他人进入，以防止婴儿出生后被非法焚烧。
To not burden their impoverished parents, two siblings decide to share a pair of shoes after the brother loses the sister's. While this turns out to be more difficult than they imagined but fate offers a chance in the form of a marathon.
