One man's brutal campaign for vengeance takes on national dangers after he is revealed to be a former operative of a powerful and cover organization known as "Beekeepers".

Cordelia, a young woman living in London, meets her mysterious and alluring neighbor Frank for the first time but quickly becomes suspicious of his motives. With her twin sister away for the weekend, Cordelia is left alone and overcome with paranoia. She begins to unravel and sink back into past traumas the more that Frank tries to charm his way into her life, becoming a danger to herself and others.

When SAS operator Tom Buckingham takes his girlfriend, Sophie, from London to Paris to propose, their train is hijacked by notorious war criminal Grace Lewis. Trapped in the English Channel and facing a massive loss of life if Grace's plan goes awry, Tom is the only hope that Sophie and the passengers have to survive.