Park ranger Angelica seeks the help of her dog handler ex-boyfriend, Viktor, to search for a missing woman in a dangerous nature reserve in Sweden. The search is complicated by a disturbing myth about the Cave Banshee, a vengeful spirit from the Nordic folklore that once lured miners to their deaths in the reserve's treacherous caves. As they delve deeper into the forest, Viktor starts to question his own sanity and whether the rumored Banshee is more than just a myth. To make matters worse, Angelica and Viktor share a painful history with the haunted place. Viktor must now confront his troubled past and work together with Angelica to survive the night and unravel the mystery behind the woman's disappearance.

1968 年至 1973 年间，奥兰群岛作家安妮·布洛姆奎斯特出版了五部小说，记录了斯托姆斯凯里·玛雅的一生。斯托姆斯凯里·玛雅是一位朴实的农家妇女，她的生活漫长而又辛苦，她谦逊地信仰上帝，随着岁月的流逝，她逐渐获得了一些独立性。