Lily Pierce, haunted, seeks her estranged father, a disgraced history professor, to learn how to battle supernatural threats like knights fighting monsters, drawing from a bygone era of swords and armor.

克莱尔小时候有个假想的朋友，长大后她回到童年的家，却遭到“曾经朋友”的折磨。尽管是一部美式恐怖片，风格却非常多元化，从预告可窥紧绷于弦的气氛。