“廢柴”大齡男人顧大池繼承了父親的“遺產(chǎn)”：一家破二手書店。他決定用一個(gè)夏天把書店變現(xiàn)，由此認(rèn)識(shí)了復(fù)讀女孩蔡小心，他們整理書賣書，把面包車改成“移動(dòng)書房”上路，直到發(fā)現(xiàn)了父親藏在書里的“寶藏”……很快，夏天就這么過去了。

　　The nightmare was about a demonic possession. A long time ago, there was an evil in a small town and it was jealous of the girl and would never let her go, since the devil loved the girl. One night, the evil raped the girl and she became pregnant. After months the girl could not hide her baby, her father figured her secret out and clapped the girl in irons and locked her room door. But the evil put the gun to her father' temple and saved the girl. The father had a stroke and had been sleeping on the bed for three months and died. Time went on and the girl brought a child into the world. Naturally, people who were living in the village heard the story and they did not want to see neither the girl nor the baby since when the baby was born, plants dried in the field, fishes lost in the lake and people had prayed to the god for rain, but nothing changed in the village. People got so angry, dug a hole in front of the fountain, put her into the hole and threw stones at her face. The girl died soon after. The evil went off the deep end, took a revenge of the village and killed everyone except two sisters because the evil wanted them to take care of its baby...

 一顆隕石撞擊蘇格蘭偏遠(yuǎn)森林，意外喚醒了自尼安德特人時(shí)代就蟄伏地底、以骨骼為食的遠(yuǎn)古克蘇魯式怪獸 “守骨異獸”。1976 年，調(diào)查者詹姆斯?惠勒深入洞穴后離奇失蹤，僅留下一張怪獸剪影的 8mm 膠片。數(shù)十年后，他的孫女奧利維亞為尋找同樣失蹤的母親，帶領(lǐng)一群好友與怪獸專家哈里斯教授，深入洞穴系統(tǒng)調(diào)查連環(huán)失蹤案，卻不知自己正被這只地底生物步步獵殺，陷入絕境求生的獵殺游戲。

影片取材自境外幸存人質(zhì)真實(shí)自救經(jīng)歷。                                                                      　　駐外記者馬笑（肖央 飾）和志愿醫(yī)生潘文佳（齊溪 飾）夫婦，陪同工程師苗峰（鄭愷 飾）赴郊區(qū)修理基站，當(dāng)?shù)鼐謩萃蛔儭Ｈ艘宦范惚芸植澜M織的無差別襲擊，最終還是被綁架淪為人質(zhì)，并在獄中結(jié)識(shí)了華僑商人周偉杰（任達(dá)華 飾）。面對恐怖分子聞所未聞的屠殺暴行和以命換錢的勒索，他們歷經(jīng)105天，展開了一場驚心動(dòng)魄的自救逃生。