Can you summarize the following document?
        
  本劇由一個CIA的行動事務官凱莉·麥迪遜追查一個叛變的美國士兵的故事展開。凱莉在伊拉克執行一項未授權的任務,一名即將被實行絞刑的犯人告訴她,有一個美國士兵已經被基地組織策反。十個月後,凱莉的上司,反恐中心指揮官,大衛·埃斯迪斯,向凱莉和她的同事們宣佈了一條緊急情報。一名美國海軍陸戰隊中士,尼古拉斯·布羅迪,在2003年的戰場上失蹤,如今被美國三角洲部隊士兵從恐怖分子阿布·納齊爾的一個管轄區中救出。凱莉確信布羅迪就是十個月前伊拉克的犯人告訴她的被策反計程車兵。然而,聯邦政府和CIA的上級都相信布羅迪只是一個戰爭英雄。凱莉意識到讓她的上司相信布羅迪是叛變分子,監視他的行動這件事簡直不可能。她找到她唯一能相信的人,她的導師索爾·貝倫遜。他們兩人必須聯合起來調查布羅迪,並阻止下一場恐怖分子對美國本土的襲擊。

  

  *And the home of the brave*  Gil Scott-Heron: ”The first revolution is when you change your mind about how you look at things and see there might be another way to look at it that you have not been shown.“  Jeremy Scahill: “The brutality against protesters, the para-militarization of law enforcement.”  Carrie: That’s when you have to keep trying.  PEOTUS Elizabeth Keane: We don’t need a police state in this country to fight terrorism. We need a new strategy.  Gil Scott-Heron: “The revolution will not be televised.”  Glenn Greenwald: “... the system of indefinite detention...”  Jeremy Scahill: “FBI and the CIA targeting Muslim communities...”  DeMarco: Security. Got an agitated non-compliant patient. [?Quinn?: Get away from me!] What’s his name again?  Carrie: Peter Quinn.  DeMarco: Peter Quinn. [Carrie: No wait, stop it!]  Gil Scott-Heron: “You will not be able to stay home, brother. You will not be able to plug in, turn on, and cop out.” ?: “It’s a very alarming charge.” ?: “The Russians hacked our committees.” ?: “The continuation of endless war.”  Quinn: Can’t you get that through your fucking skull?  Gil Scott-Heron: “The revolution will put you in the driver’s seat.”  Jeremy Scahill: “The US continues to engage in a covert-war with very, very high stakes.”  Saul: I made promises and didn’t keep them. ? : “This world began right after 9/11”  Gil Scott-Heron: “The revolution will not be televised, not be televised. There will be no rerun, brothers and sisters. The revolution will be live.”  Jason Chaffetz: “Which agency?”  Charles McCullough: “I can’t say that here in an open hearing, sir.”  Quinn: You saved me.  Carrie: Yes.  Quinn: Why? “
《國土安全》(英語:"Homeland")是美國的一部驚悚題材的反恐及政治電視劇,內容圍繞美國中情局與中東的關係及中情局在防止美國於「後911事件時代」再受恐怖襲擊的努力。