Synopsis
In 2008, the Reaper
virus infects Scotland,
resulting in the country being walled off by the British government. A
Scottish
woman brings her little daughter, injured in one eye but otherwise
healthy, to
soldiers for rescue. The mother convinces them to airlift her daughter
and
gives her daughter an envelope. Years pass after the successful
quarantine,
with the contained population apparently dying off. Decades later, the
virus,
thought to be contained, reappears in London. Prime Minister Hatcher
(Alexander
Siddig) and his puppeteer Canaris (David
O'Hara) share with domestic security chief Captain Nelson (Bob Hoskins)
news of survivors in Scotland, believing a cure may have been found.
They ask
him to send a team into the walled-off country to find medical
researcher Dr.
Kane (Malcolm MacDowell), who was last known to be
working on a cure when Scotland was quarantined. Nelson chooses Major
Eden
Sinclair (Rhona
Mitra), the little girl now grown up with a cybernetic eye replacing
her
lost eye, to lead the team.

Inside the wall,
while investigating Kane's last
known location, Sinclair and her team are ambushed by plague survivors.
As some
team members are killed, Sinclair and Dr. Talbot (Sean
Pertwee) are captured while Sergeant Norton (Adrian
Lester) and Dr. Stirling (Darren
Morfitt) manage to escape. Sinclair is tortured by the leader of the
survivors, Sol (Craig Conway). Dr. Talbot is barbecued by the
cannibalistic survivors. During the cookout, Sinclair escapes from her
cell and
comes across Kane's daughter, Cally (MyAnna
Buring), also imprisoned. Freed by Sinclair, Cally leads her to a
waiting
train manned by her friend Joshua (Martin
Compston), and Norton and Stirling meet up with them to escape from Sol
and
his men. The train takes them to the mountains, where they take a
shortcut
through a hidden military facility to the castle where Kane dwells.
They are
surrounded by Kane's medieval soldiers, Joshua is killed, and everyone
else
surrenders to Kane's medieval men. Sinclair discovers from Kane that
the
survivors are naturally immune and that he has been warring with his
son, Sol.
There is no cure for the virus. Sinclair defeats Kane's executioner,
Telamon,
in an open arena within the castle, and her teammates help her escape
from the
castle. They retreat to the facility and find a Bentley in storage to
use as
escape, though Norton is killed in the process.
In London,
political leaders plan to seal off the
"hot spot" where the virus is spreading. Canaris convinces Hatcher to
let the infected population dwindle before sharing any cure Sinclair's
team may
provide so the population is more controllable against infection in the
future.
Although the government leaders are isolated, an infected man
successfully
infiltrates their location and infects Hatcher. Hatcher, knowing that
he has
the virus, commits suicide, and Canaris takes over Hatcher's position
as Prime
Minister.
  
In Scotland, Sinclair, Cally,
and Stirling run into Sol's men on the highway and lead them on a car
chase.
Sol attempts to hijack the Bentley, but while he is on the roof,
Sinclair plows
the car through a roadblocked bus, decapitating him. Using a GPS cell
phone
also taken from the facility, Sinclair summons a government gunship and
hands
over the cure to Canaris: the immune survivor Cally from whose blood a
vaccine
can be replicated. Canaris, who arrives with the gunship, shares his
plan with
Sinclair to withhold the cure for political reasons and invites her
back to
London. Sinclair chooses to stay and goes to find her old home located
at the
address on the envelope her mother had left her. Nelson, having been
given the
envelope by Sinclair before she left on the mission, finds her there.
Sinclair
provides Nelson a video of her conversation with Canaris, which she
recorded
with her cybernetic eye. Nelson takes the recording back to London and
gets it
aired publicly, exposing Canaris' plan to hold back the cure. Sinclair
returns
to the location where she and her team were first attacked by the
cannibalistic
tribe and, presenting them with Sol's severed head, is cheered as their
new
leader.
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