This post contains spoilers for the end of Spider-Man: Into the Spider-Verse.
One of the many treats of Spider-Man: Into the Spider-Verse is how dense it is. Every frame is packed with little visual delights; the voice cast is stacked through and through. If you look away for a second, you might miss the Chance the Rapper poster in our hero's dorm. If you stop listening carefully you might not notice that Chris Pine is making a cameo. Hell, a Brooklyn bystander is played by Grammy Album of the Year nominee Post Malone. And all of that is set against pulsating colors that emphasize the artistry in comic books. It's the modern superhero movie that's most indebted to what came before it, while still being one of the most innovative we've seen. And that's why it feels so ripe to produce years and years of entertaining offshoots.
It goes without saying that the most important thing Spider-Verse does is establish Miles Morales (Shameik Moore) as a major protagonist. While Spider-People abound -- more on that later -- Miles, a Brooklyn high schooler, is the center of the story, and his is a journey that fans have been wanting, eager for a Spider-Man that's not the same white guy from Queens. Frustrated with his cop dad (Brian Tyree Henry) and his boarding school, he turns to his cool Uncle Aaron (Mahershala Ali), who takes him to tag an underground spot where he, surprise, gets bitten by a radioactive spider. As he grapples with his newfound powers, he accidentally sees Kingpin (Liev Schreiber) kill the reigning Spider-Man, Peter Parker (voiced, in a surprise turn, by Pine), in the process of opening up a portal to another universe. Kingpin is on a mission to save his wife and daughter, who were killed in his own timeline during a confrontation with the webslinger, but in doing so, he sends a host of other Spider-People from various other timelines to Miles' New York.
Thus, in order to stop the threat, Miles must team up with an alt-universe Peter Parker (Jake Johnson), who has become depressed and schlubby; Gwen Stacy-turned-superhero Spider-Gwen (Hailee Steinfeld); anime-indebted Peni Parker (Kimiko Glenn) and her mecha; the hardboiled Spider-Man Noir (Nic Cage) from the 1930s; and the cartoon pig Spider-Ham (John Mulaney). If the other members of the Spider-Team stay behind in Miles' world, it's a suicide mission, so Miles must grow into the responsibility of wielding his new abilities. Great power, etc.