The next day, Miles finds himself feeling differently. As Miles spray-paints the walls, a radioactive glitching spider crawls up his leg and bites his hand after Miles takes a picture of his work, but he only lightly taps the spider off his hand before leaving with Aaron. The two then go to the tunnels near the subway so that they can do some graffiti, since Aaron is fond of Miles's artwork.
Miles tells him about Gwen, and Aaron tells him to do a shoulder touch to try and charm her. Later, Miles sneaks out of his dorm to visit his uncle Aaron (voice of Mahershala Ali), who is Jefferson's brother and a sort of black sheep due to his criminal activities. During one of his classes, he meets Gwen Stacy (voice of Hailee Steinfeld), who doesn't immediately tell him who she is. Miles gets into his schoolwork as he tries to adjust to this new environment. Jeff then uses his radio to force Miles in front of all the other students to say "I love you" back, embarrassing him. Once they arrive, Jeff tells Miles he loves him, but Miles fails to say it back. As they ride to the school, they see a news report on Spider-Man, whom Jeff is not a fan of. Jefferson, a cop, catches Miles and escorts him to school in his cruiser. Miles goes around his neighborhood greeting his friends and tagging street signs with stickers he made. He lives with his father Jefferson (voice of Brian Tyree Henry) and mother Rio (voice of Luna Lauren Velez). We meet Brooklyn teen Miles Morales (voice of Shameik Moore) as he is getting ready to start attending a private school. He does have some things he's not proud of (the emo dance, for one), but he takes his duties as Spidey proudly, as he is the one and only. By now, everybody knows how big he is, what with saving New York constantly, getting his own comics, cereal, and even a Christmas album. This animated film starts with Peter Parker (voice of Chris Pine) introducing himself as we know him, the friendly neighborhood Spider-Man.The synopsis below may give away important plot points.
Can Miles take a leap of faith, and become Spider-Man? But, a hero isn't the one who always wins. More and more, with the fate of the multiverse hanging by a thread, young and utterly inexperienced Miles has no other choice but to master his newfound abilities, even though he believes that not everyone is cut out to be a hero.
Now, gifted with unfathomable powers, much like the original Spider-Man (2002), Miles is shocked to discover that life has become even more complicated, unbeknownst to him that he is about to get caught in the middle of a dreadful inter-dimensional conflict. Wrestling with his new responsibilities, Miles discovers a whole new world hidden at an abandoned NYC subway tunnel, only to get bitten by a stealthy radioactive arachnid from another dimension. Struggling to find his place in the world, while juggling school and family, Miles Morales, a smart teenager from Brooklyn, reluctantly enrols in an elite New York City boarding school.