In Greenland, a climate meeting for the Arctic Council is in the process of agreeing on a new and historic climate agreement that prohibits all environmentally harmful oil drilling in the area when the political advisor to Sweden's Foreign Minister Elsa suddenly disappears during a visit to a research vessel.

Sharon Pici, a Kansas City Police Detective, is locked in a room that she cannot escape.

The civil war rages in the Central African Republic, Linn (35) leads a team of aid workers who are working tirelessly to save lives in a field hospital outside a massive refugee camp. When a Muslim man, persecuted and in mortal danger, seeks refuge, Linn faces a critical decision. A growing mob and Christian militia demand his handover. As the head of security, Linn must act quickly, brutally balancing the safety of her team with the value of a single life. Based on the true events that unfolded during 15 tense hours at a Doctors Without Borders hospital in Bangui on Christmas Eve, 2013.

这个故事是关于一个外星人安静地生活在海底，直到他们的生态系统被污染破坏后被迫毁灭人类。科学家们竞相避免世界末日。这本书在德国和其他欧洲国家是一本畅销书。虽然阿尔·戈尔（Al Gore）的《难以忽视的真相》（An Ineasy Truth）等影片试图引起人们对环境的担忧，但《蜂群》（The Swarm）成为越来越多电影中的最新一部，这些电影基于人类对地球的虐待将得到回报的哲学。

路奇乌斯（保罗·麦斯卡 饰）童年时，曾亲眼目睹万人景仰的罗马英雄马克西蒙斯死于舅舅罗马皇帝康莫德斯之手。为了避开罗马的腐败和暴力，路奇乌斯被母亲露西拉（康妮·尼尔森 饰）送往北非避难。他长大后成了一名出色的战士，在努米底亚过着平静的生活。
某日，曾是马克西蒙斯手下大将的阿卡修斯将军（佩德罗·帕斯卡 饰）奉二位皇帝之命率领罗马军团入侵努米底亚，路奇乌斯等人誓死抵抗但最终战败被俘，妻子也在攻城战中被杀。受到马克西蒙斯经历的启发，路奇乌斯决心以马克里努斯（丹泽尔·华盛顿 饰）的角斗士身份不断战斗，等待机会向阿卡修斯复仇。另一方面，阿卡修斯和露西拉企图推翻两位皇帝穷兵黩武的暴政统治，马克里努斯则按着自己的意图选择支持两位皇帝，这使得角斗场成为各方势力明争暗斗的舞台，并且演变成了一场血腥风暴的政变……