So I need to explain some things. In this universe sony-marvel didn't happen in the same time as in real life, but lets say after the infinity saga disney somehow made a deal with sony so this version of Spider-man can be connected to mcu thanks to multiverse and thanks to this deal, this movie would be make witch is like no way home but in this universe. So Mysterio from raimi universe accidently opnes a barier between universes and becuase of this Green Goblin,Doc ock and Sandman from raimi verse appears in Grant's spider-man and becuase of this Doctor Strange from mcu appears in this universe but also Gwen Stacy in universe where she became spider-gwen. Meanwhile Peter is getting more and more corupted by venom symbiote, he is mean to everyone even Flash who is his last friend from highschool and Black Cat and she even breaks up with him at some point and Peter wouldn't care. At some point Peter lost control and he start rampage while he fights raimi villains but then no orther than Tobey Maguier himself appears and alongside Spider-gwen,Strange,Sandman and Dock ock who turns good fights symbionte spider-man and after the hard battel Peter gets the suit rid of him. After that Strange bring everything back to normal and everyone comes back to their universes and Peter makes a new suit symbolic his new beginning. In the post credit scene it would be reavel that symbionte isn't dead and is traveling somewehre.
