Series 1: Set in the halls of Westminster, the series follows Prime Minister Robert Sutherland (Robert Carlyle) and his Chief of Staff Anna Marshall (Victoria Hamilton) as they try to deal with a national emergency. The pair must bear attacks from their political opponents, face family pressures and lead the COBRA committee, a team of experts and politicians, to ensure the nation's safety. Cyberwar (Series 2): In COBRA: CYBERWAR we find a Britain in trouble. As the government scramble to combat a new, invisible threat, British Prime Minister Robert Sutherland (Robert Carlyle) and his team of dedicated advisers are forced to question everything they thought they knew about our relationship with the rest of the world. Rebellion (Series 3): Sutherland's government is faced with their biggest challenge yet. When an unforeseen environmental disaster causes enormous destruction and loss of life, the consequences are far reaching for the Prime Minister. The crisis spirals to include the corruption of the arms industry and the rise of shadowy corporate security firms. The Prime Minister must make a crucial decision, about who he is personally, and what - ultimately - he is willing to sacrifice in order to remain in power.