18岁的乔炎热的一天

　　一群十几岁的少年庆祝一个本地连环杀人犯的忌日，突然发现他们自己与这个困扰的城市传说的现实面对面。

　　经过多年的共同生活，亚历克斯和苔丝最终和平地结束了他们的婚姻，也由此开启了一个尴尬的阶段：他们开始摸索如何在各自独立生活的同时，抚养两个儿子，并维持彼此的友谊。亚历克斯发现了自己新的爱好，投身于喜剧表演之中，而苔丝则开始直面自己为家庭做出的牺牲。本片根据英国著名喜剧演员约翰·毕晓普的人生经历改编。

　　British Army radiation drills at a remote Scottish base attract a subterranean, radioactive entity of unknown nature that vanishes, leaving two severely radiation-burned soldiers... and a "bottomless" crack in the earth. Others who meet the thing in the night suffer likewise, and with increasing severity; it seems to be able to "absorb" radiation from any source, growing bigger and bigger. What is it?? How do you destroy a thing that "feeds" on energy?