Hathaway plays Emma, a witty working class girl from North London, while Jim plays Dexter, a wealthy charmer who lives as if the world is his playground. As a huge fan of the book, Hathaway immediately began campaigning for a part of it, upon learning that the book is about to be brought to the big screen. She quickly flew to London to meet with the film director, and even sent a few songs to the director, describing who "Emma" is, to prove that she knows "Emma." "I just said, you know what, I didn't nail this, I know I didn't nail it, but I do understand who this girl is. Do me a favor and I quickly wrote down the names of some songs and I said she listens to these songs, these are who she is and what she feels like and these are - I can't tell you why I'm right, but just, these songs are what she feels like. " Perhaps Hathaway really knew understood the character, because eventually she got the role. The story develops as Emma and Dexter's friendship turns into a whirlwind romance over the course of 20 years. "One Day" is scheduled to open in U.S. theaters on August 19th and in Taiwan on August 26th.