The Walker family is an ordinary American family. The adult siblings - Sarah, Tommy, Kevin, Justin, and Kitty - try to live up to their parents' expectations.

Sydney Bristow was recruited as an undergrad to work for SD-6, which she thought was a government agency. However, when her fiancé is killed, she finds out that SD-6 is actually a counter-government agency. Sydney approaches the CIA and becomes a double agent.

Ann Romano struggles with her job and raising two headstrong daughters.