A beautiful young woman (Natalie Portman) and Dan Woolf (Jude Law) see each other for the first time from opposite sides of a street as they are walking toward each other, among many other rush-hour pedestrians. She is a young American who just arrived in London, and Dan is an unsuccessful British writer who is on his way to work, where he writes obituaries for a newspaper. Not used to the direction of the traffic, she looks the wrong way as she crosses the street and is hit by a taxi cab right in front of Dan. After he rushes to her side, she smiles at him and says: "Hello, stranger."