A family is invited to spend a weekend in an idyllic country house, unaware that their dream vacation will soon become a psychological nightmare.

Refusing to let anything spoil their romantic weekend break, a young couple confront a gang of loutish youths with terrifyingly brutal consequences.

In London, solicitor Arthur Kipps still grieves over the death of his beloved wife Stella on the delivery of their son Joseph four years before. His employer gives him a last chance to keep his job, and he is assigned to travel to the remote village of Crythin Gifford to examine the documentation of the Eel Marsh House that belonged to the recently deceased Mrs. Drablow. Arthur befriends Daily on the train and the man offers a ride to him to the Gifford Arms inn. Arthur has a cold reception and the owner of the inn tells that he did not receive the request of reservation and there is no available room. The next morning, Arthur meets solicitor Jerome who advises him to return to London. However, Arthur goes to the isolated manor and soon he finds that Eel Marsh House is haunted by the vengeful ghost of a woman dressed in black. He also learns that the woman lost her son, drowned in the marsh, and she seeks revenge, taking the children of the terrified locals.

Michael Mason, a pickpocket living in Paris, steals a bag with a teddy bear in it. Not realizing the toy contains a timed bomb, he tosses it aside on a busy street. A few seconds later it explodes, killing four people. CCTV footage reveals Mason's face and the French police tag him as a terrorist threat. The explosion, although botched, was set up by a select group of the French Interior Ministry as a decoy so they can make a half billion dollar digital transfer from a bank (closed on French National Day) -- hence the title Bastille Day. In a separate CIA investigation the unruly agent Sean Briar discovers the real story behind Mason's "terrorist attack". The two men, on different sides of the law, collaborate to bring the corrupt members of the Ministry down.