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)
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.
