本作は田舎に住む祖父母に会いに行く看護学生の孫を主人公にした物語。孫は家族水入らずで幸せな時間を過ごすが、祖父母の家にいる「何か」に違和感を覚え、やがて人間の存在自体を揺るがすような根源的な恐怖に直面する。。In the shadows of a highly contagious virus, a normal family seeks shelter in the safety of their own home during a nationwide LOCKDOWN in which MARTIAL LAW is declared. With nowhere to go and danger approaching from outside. The family is forced to confront the evil that terrorizes them from within before it consumes them all.。电影改编自斯特林堡的独幕悲剧:性格怪癖的朱丽小姐婚约破裂,与爱尔兰男仆相爱并计划私奔,无奈被厨娘识破,面临身败名裂的危险……。