Peter Parker (Tobey Maguire) finally has the girl of his dreams, Mary Jane Watson (Kirsten Dunst), and New York City is in the throes of Spider-mania! But when a strange alien symbiote turns Spider-Man's suit black, his darkest demons come to light - changing Spider-Man inside as well as out. Spider-Man is in for the fight of his life against a lethal mix of villains - the deadly Sandman (Thomas Haden Church), Venom (Topher Grace), and the New Goblin (James Franco) - as well as the enemy within himself.
How does Spider-Man 3 follow on the heels of its predecessor, which was widely considered the best superhero movie ever? For starters, you pick up the loose threads from that movie, then add some key elements of the Spidey comic-book mythos (including fan-favorite villain Venom), the black costume, and the characters of Gwen Stacy and her police-captain father.
In the beginning, things have never looked better for Peter Parker (Tobey Maguire): He's doing well in school; his alter ego, Spider-Man, is loved and respected around New York City. And his girlfriend, Mary Jane Watson (Kirsten Dunst), has just taken a starring role in a Broadway musical. But nothing good can last for Spidey. Mary Jane's career quickly goes downhill; she's bothered by Peter's attractive new classmate, Gwen Stacy (Bryce Dallas Howard); and the new Daily Bugle photographer, Eddie Brock (Topher Grace), is trying to steal his thunder.
Enter a new villain, the Sandman (Thomas Haden Church), who can transform his body into various forms and shapes of sand and who may be connected to Peter's past in an unexpected way. There's also the son of an old villain, Harry Osborne (James Franco), who unmasked Spidey in the previous movie and still has revenge on his mind. And a new black costume seems to boost Spidey's powers, but transforms mild-mannered Peter into a mean and obnoxious boor (Maguire has some fun here).