Joseph Gordon-Levitt's Tom falls hard for Zooey Deschanel's Summer, who does not return the sentiment, so naturally, the relationship doesn't work out. (500) Days, though it has its moments of genuine insight, is more a story of heartbreak for heartbreak's sake and not a deep emotional journey. The supporting cast all speak the same commiserative "Dude, no!" dialogue that portrays them as inordinately interested in Tom's love life. I regret to inform you that Summer is not a character so much as a boogeyman for males with an overdeveloped romantic bent: an oblivious cutie that will steal your heart and then blithely take a shit in the hole she left in your soul. (500) Days is a film that is missing a better half.