The Raimi Spider-Man trilogy follows Peter Parker's journey from a high school student bitten by a radioactive spider to becoming the iconic superhero, Spider-Man. The three films showcase his struggles with balancing his personal life, including relationships with Mary Jane Watson and Harry Osborn, with his duties as a crime-fighting vigilante. He faces off against iconic villains like the Green Goblin, Doctor Octopus, Sandman, and Venom. The trilogy explores themes of responsibility, sacrifice, and the consequences of one's actions.