Sydney Bristow is a young, athletic, college graduate who was recruited her freshman year as a secret agent for SD-6, a top-secret branch of the CIA. After a few years -- after Sydney confides her lifestyle to her boyfriend, the evil head of SD-6 -- Arvin Sloan, has him killed. Sydney learns that SD-6 is part of a rogue international agency called the Alliance of 12, out to rule the world. She becomes a double agent, working with the real CIA to bring down SD-6 with the assistance of her handler, Michael Vaughn, and her estranged father Jack Bristow -- also a double agent. Along the way, Sydney fights various rival agents, rival terrorist groups, and traitors all the while keeping her cloak-and-dagger lifestyle a secret from her friends. (Season 1) Written by Matt Patay
For seven years, Sydney Bristow believed she was working for a covert branch of the CIA, named SD-6. However, when she tells her fiance of her job, Arvin Sloane, head of SD-6 and an old family friend, has him murdered. With this life-shattering event, Sydney learns not only that SD-6 is a mercenary group of terrorists, but that her father, too, works for SD-6. Sydney then works with the CIA as a double agent, trying to bring down SD-6 with her father, a second double. This is only the beginning of a path of betrayal, murder, lies, and disbelief. Sydney Bristow pushes through trials of love, learns the truth about her mother, loses a friend in an utter form of incredulity, pitfalls herself into months of torture and puzzlement, and is tormented with countless revelations to come. Written by Michelle P.
| Episode guide | Plot keywords | Alternate versions |
| FAQ | User comments | Quotes |
| Trivia | Goofs | External reviews |
| Main details | MoKA: keyword discovery | Search plots section |
| Browse titles with plot summaries by letter A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Other | ||