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COBRA
由于大范围的停电在全国范围内造成混乱并威胁到生命，由英国主要专家和政治家组成的COBRA（内阁办公室简报室）委员会聚集在一起，寻找一种能让灯重新亮起来的方法。 以英国首相罗伯特·萨瑟兰（罗伯特·卡莱尔饰）与总参谋长安娜·马歇尔（维多利亚·汉密尔顿饰）为核心，讲述两人在内阁作战室（COBRA）内联合专家团队应对国家危机的过程。故事线同时涉及首相与政敌的角力、角色个人生活的挑战，其他关键人物包括国内应急秘书处首长弗雷泽·沃克、内政大臣阿奇·格洛弗-摩根等
Robert and Anna return to COBRA to try and devise an effective strategy against members of an environmental protest group who are blocking traffic from going through a railway tunnel.
Following the sinkhole collapse, Robert and Rachel hurry to the site in the hope that Ellie might still be alive. Unbeknownst to them, Ellie has made a shocking discovery underground.
With the knowledge that his daughter is alive, Robert Sutherland turns his focus on handling the aftermath of the sinkhole collapse and dealing with the abduction of Princess Yadira.
The government faces intense scrutiny for legislating an anti-protest bill deemed to be too aggressive, leading to police forces deciding to go on an unofficial strike in response.
While the government frantically launches a search operation to recover a stolen weapon, Dan and his group of mercenaries threaten to use it unless their demand for a ransom gets met.
Dan breaks into Archie's home, demanding that Robert resign from his post of prime minister or he will resort to using the weapon.
