The narrator of the movie starts out with that. This is a story of a boy and a girl. But who are they, really?
Tom Hansen is the boy. He believes in soul mates and love. He is a would-be architect turned greeting card writer, spewing word after word of happiness and sunshine.
Summer Finn, the girl, is the boss's secretary. She doesn't believe in love and thinks that relationships are always bound to end.
That doesn't stop Tom from thinking that Summer is The One, especially when he finds out that they both like The Smiths. All the common interests make Tom believe that they are compatible.
500 Days of Summer chronicles a year and a half of Tom and Summer's on-and-off love affair. Watch it when it comes to theaters on October 21, 2009.