背景设定在伦敦，一家能源公司在西欧最高的摩天大楼碎片大厦举行年会，一群激进的活动家前来砸场子，劫持了300名人质以揭露东道主的腐败。而他们的正义事业被队伍中一个狂热极端分子搅乱，后者准备谋杀大楼里的所有人，向世界传递他的无政府主义信息。 转机最终落在乔伊·洛克身上，她是一名前士兵，现在当窗户清洁工，将悬挂在大楼外90层拯救被困在里面的人并制服凶手，同时找到将腐败的能源大亨绳之以法的方法。
In the suburban neighborhood of Mumbai, a wall separates the haves and the have-nots. Sudhir and Seema, a newly married middle class couple, live a life without hardship while Vishwas, a slum dweller, dreams of dignity for his people. Their lives collide as post nightfall the town fills up with ominous cries and moans that don't belong to people - they belong to zombies .
