Struggling to find his place in the world while juggling school and family, Brooklyn teenager Miles Morales is unexpectedly bitten by a radioactive spider and develops unfathomable powers just like the one and only Spider-Man. While wrestling with the implications of his new abilities, Miles discovers a super collider created by the madman Wilson "Kingpin" Fisk, causing others from across the Spider-Verse to be inadvertently transported to his dimension.

Peter Parker is going through a major identity crisis. Burned out from being Spider-Man, he decides to shelve his superhero alter ego, which leaves the city suffering in the wake of carnage left by the evil Doc Ock. In the meantime, Parker still can't act on his feelings for Mary Jane Watson, a girl he's loved since childhood. A certain anger begins to brew in his best friend Harry Osborn as well...