In “Spider-Man 3,” Peter Parker, played by Tobey Maguire, has become comfortable in his dual identities as Spider-Man and a photographer at the Daily Bugle. Things take a turn when an extraterrestrial symbiote lands on Earth and attaches itself to Peter’s suit, amplifying his powers but also bringing out his darker side.<br /><br />As Peter becomes more aggressive and arrogant, he begins to alienate his girlfriend Mary Jane Watson, played by Kirsten Dunst, and best friend Harry Osborn, played by James Franco. Meanwhile, an escaped convict named Flint Marko falls into an experimental particle accelerator during a chase with police and is turned into a sand-like creature known as Sandman.<br /><br />Peter’s life gets even more complicated when Harry discovers that his father Norman Osborn was the original Green Goblin and seeks revenge against Peter for his father’s death. Harry dons the mantle of the new Green Goblin and teams up with Sandman to take down Spider-Man.<br /><br />As this is all happening, Eddie Brock Jr., played by Topher Grace, is competing with Peter for a staff photographer position at the Daily Bugle. When Brock gets fired due to falsifying photos of Spider-Man, he blames Peter and bonds with the same symbiote that had previously attached itself to Spidey.<br /><br />The final battle takes place between Spider-Man and three villains: New Goblin, Sandman, and Venom (the name Eddie gives himself after bonding with the symbiote). In the midst of the fight, Mary Jane is taken hostage by Venom who threatens to kill her if Spider-Man doesn’t surrender.<br /><br />With help from Harry who has a change of heart about seeking revenge on Peter after learning about how much his father really loved him as a son, Spider-Man defeats both Sandman and Venom while Harry sacrifices himself in order to save Peter from one of Venom’s attacks.<br /><br />In the end, Peter realizes that he needs to let go of his arrogance and embrace his responsibility as a hero, leading him to finally repair his relationship with Mary Jane. The movie ends with Peter walking away from a new villain, the symbiote left behind by Eddie Brock Jr., that he decides to leave behind in favor of being true to himself and not giving in to the temptation of power.<br /><br />