2009年，好朋友一行六人来到雪地中的一个偏僻小木屋过周末。突如其来的一场暴雪打断了他们的假期，他们被困山中，随着形势急转直下，好友反目，“当纳聚会”似乎要再次上演。

In 1998, thirty four unidentified bodies were found in shallow graves in a remote Siberian forest. After subsequent investigations, no official explanation by the Russian authorities was ever offered about the circumstances of the deaths. The case was closed. In 2010, a small English TV crew from the show 'Darkest Secrets' set out for the Siberian forest. 'Darkest Secrets' focuses on revisiting the sites of unsolved crimes and they employ the gifts of a psychic whose extraordinary powers may help shed new light on cold cases. The last communication to their production office in London stated that they were approaching the Siberian region where the bodies were found. Nothing was heard from them again. 'Entity' is the story of what happened to them. The forest was only the beginning....

A group of students decide to study 'reaction videos' and are led toward an old film, hidden in the archive room of a cemetery. It appears that everybody who has witnessed the film has met an untimely demise under suspicious circumstances. When the students view the footage, they discover first hand, what the demonic spirit is capable of. Fulfilling the ancient curse of a woman cruelly killed during the Spanish Inquisition.

An old box with an unusual View Master toy mysteriously appears on the doorstep of a young mother.

Upon being escorted to a mysteriously irradiated site, and after experiencing strange visions, Evgeniy finds himself questioning the very reason he was sent to investigate the site in the first place.

4名大学生到深山里露营，只是一个神秘的实体与他们一起回来

21世纪的韩国，高科技网络犯罪愈演愈烈，虚拟搜查队应运而生。搜查1队队长金宇炫（苏志燮 饰）带领下属柳江美（李妍熙 饰）、李泰均等人不分昼夜坚守在工作前线，成为打击犯罪的核心力量。一天他们追查到头号黑客哈迪斯所在方位，赶赴现场后却目睹被卷入性接待丑闻的女演员申孝静坠楼身亡。 申孝静之死引发舆论哗然，种种证据指向哈迪斯便是凶手。但当金宇炫在地铁站追捕到哈迪斯时，震惊发现其真实身份竟是自己昔日警校的同窗好友、而今的独立记者朴奇永（崔丹尼尔 饰）。朴奇永更是向他坦白自己被利用的事实，两人遂约定分别在明处和暗处调查真凶。彼时的他们都没有料到，一个令两人命运陡变的巨大危险正在袭来。疑点重重的女演员之死，亦不过只是真凶庞大复仇计划的开端……

讲述1933年，被称为“幽灵的特工”主导了反对日本殖民统治的抵抗运动。对此，日本总督府为了防止以新总督为目标的“幽灵暗杀”行动，在政府官公署内设置了陷阱。就这样，5名嫌疑人被绑架到孤立的酒店，他们必须在一天的有限时间里查明“幽灵”的真实身份。

“四人帮”垮台前夕，陆港市歌舞团的芭蕾舞演员夏征兰和青年医生陆翰章结了婚。婚礼结束，陆翰章用了夏征兰为他准备的牙具刷牙，突然中毒死亡。老公安人员赵毓雄带着两个助手对此案进行侦破。发现牙膏里有毒药，同时又在陆翰章办公室的字纸篓里发现了一封撕碎的署有女人名字的信。他们正在现场调查，夏征兰又突然神经失常，企图跳海自尽，在海边礁石上，又发现一首寓意离奇的诗。赵毓雄和小奚、小孟对医院和歌舞团进行调查，排除了情杀案的设想。在和护士长温婉君的谈话中，赵毓雄发现她谈吐暧昧，神色异样，便嘱令助手暗中注意。接着发生了一起奇怪的事：赵毓雄傍晚归家，路过海滨，听到女人呼救，原来是流氓行奸，赵赶去营救，受到流氓的围攻，赵机智地用酒瓶击倒一个流氓，纵身入海，被一艘渔船救起。赵毓雄掌握了足够的证据和材料，在杨禹生副局长的支持下，提前召开了案情分析会。会上，赵毓雄用铁一般的事实，当场对吴森进行了无情的揭发：原来吴森是“四人帮”首脑——奇峰安插在陆港市的爪牙。老公安局长洪征知道奇峰解放前叛变革命的底细。奇峰怕自己暴露，便指使吴森把洪征暗害了。并且把洪的尸体沉入海底。这件事被当时在市委工作的干部涂云知道了。吴又把涂云毒死在医院。涂云临死前，把这件事情的真象，告诉了为他治病的陆翰章。吴更加害怕，又指使自己的情妇，趁陆新婚，毒死了陆翰章，同时又伪造信件，制造假象，妄图转移公安人员的视线。所有这一连串的政治谋杀，都是为了一个目的，保护其主子一奇峰。吴森被驳得哑口无言。老谋深算的黄欣也感到事情不好办。他只好丢车保帅，下令逮捕吴森。会后，．又利用权术和计谋，把杨禹生和赵毓雄关进了麻疯病院。最后还企图诱杀夏征兰，消灭一切知道内情的人。夏征兰看穿了黄欣的阴谋。知道“四人帮”及其一伙决不会放过她。虽无比愤怒，但又无法逃脱，只好投海自杀。用她年轻的生命，对“四人帮”作了血泪的控诉。