Will Francis (Jude Law) is a landscape architect, who lives in London with his American girlfriend Liv (Robin Wright Penn) and her teenage autistic daughter Bea. Bea's habits and behaviors start to strain Will and Liv's relationship. Complicating the situation is his feeling of being left out of the equation because Bea is not his biological daughter. Relationship counseling doesn't prevent Will and Liv to continue to drift apart.
Meanwhile, Will's office building gets burgled. The thieves use 15-year-old Miro to get them inside. His acrobatic skills allow him to enter by way of the roof. Miro is a Bosnian refugee who lives with his mother Amira (Juliette Binoche).
Though they are puzzled about how the burglars manage to disable the alarm, the architect is not particularly worried, contributing it to the neighborhood's dodgy reputation. However, after the second one, he decides to stake out the building after hours, hoping to spot the culprits and alert the police. Being out of the house on nightly stakeouts actually suits Will just fine, given his home situation. Spotting Miro trying to break in one night, Will follows him. This leads Will to the flat where Miro lives with his mother. Realizing their modest living means, he decides not to report them to the police, but goes back to Amira's apartment under the guise of having a suit that needs mending.
He soon becomes emotionally involved with her. When she finds out he knows it's her son who is the burglar, she lures him into her bed to take pictures and be able to blackmail him. When the police close in on the burglars, Will decides to come clean and tell everything in such a way that the boy doesn't get incriminated, but his wife does find out about the affair.
Best part of story, including ending:
The wrap up is rather unusual and circumvented.
Best scene in story:
Where he follows the little boy home, he finds out about his family situation, meets his mother and falls for her.
Opinion about the main character:
It's a real life character.