spirderman 3 story..

Peter Parker basks in the spotlight with his public success as his superhero alter ego, Spider-Man.[3] He plans to propose to Mary Jane Watson. When the police tell Parker and his aunt that new evidence shows Sandman as being responsible for killing Uncle Ben, Parker goes after the alleged perpetrator personally.[4] As Spider-Man, he battles Sandman and his former friend Harry Osborn.[5] During this time, astronaut John Jameson brings an "alien life force" back to Earth with him.[6] The force forms a symbiotic relationship with Peter's costume, influencing his behavior for the worse. As a result, Spider-Man has to fight the villain within, until he finally tears the symbiote from his body.[7] After parting from Spider-Man, the symbiote finds a new host in Eddie Brock Junior, and the resulting merger creates Venom.[8]

Before getting on Peter, the symbiote (the black oil substance) has a rather 50's sci-fi origin (ala The Blob) - In a church bell tower, Eddie Brock (Topher Grace) follows this black Spidey character and sees Peter ripping himself free of the suit - some of which falls onto Brock, causing him to "become" Venom. - For most of the film, Spider-Man is in pursuit of The Sandman. Harry as the Goblin (sans mask) fights Peter early on and returns at the end to aid him in the final confrontation with Sandman and Venom at a construction site. - "Dark Spidey, as it were - Peter before he has overcome Venom - is the one who courts Gwen Stacey. Problems in the relationship with MJ, as well as professional issues compound to bring him down. Even downer than last time. That's how Raimi, Sargent and co are using Venom - as a dramatic device to show Peter not just giving up on his great responsibility, but getting drunk on his great power." - There are scenes inside Curt Connor's lab, where he studies the symbiote, and these scenes are also used to set up the research that will, in the character's story - though not in this movie - turn him into The Lizard. - The Black Cat does not make any significant appearance in the film, despite existing, on paper, in various earlier conceptions. - And the fourth villain? "Makes only a fleeting appearance - Bruce Campbell's character this time around is Quentin Beck, known to fans of the comic as Mysterio".