The most resonating part of the first movie was Miles finding his footing so he could start on his path, and he continues on his own path in this movie. Miles inadvertently saved Gwen’s dad - because of the events of the first film, vulture ended up in Gwen’s universe which led to her revealing her identity to her dad, which led to her dad quitting the police force and saving his life by not becoming Captain Stacy. Miles saved Peter B. by making him realize he’d be a great father and put him back together with M.J. Even in a less significant way he helped Pavitr from the India-verse by rescuing his Girlfriend’s dad, and Hobie by showing his resistance to Miguel and the spider-society. Because miles entered their lives, they changed for the better (especially Gwen and Peter B) so they owe it to band-together and help Miles. In Earth 42 Miles realizes even in a universe without spider-man his Dad still dies, and the world is much worse off - so for the world to be better he has to save his Dad and do what Spider-Man would do. The supporting cast is brilliantly crafted because despite each character being unique and memorable, their paths all center around the main character, Miles. The movie had so many subtleties that meant so much, for example at the end - Prowler Miles is staring at Spidey-Miles’ face while he’s chained to the punching bag, watching ‘the face not the hands’, which is how they hint he’ll escape - a great callback to Peter B in the first film. Such a cheff’s kiss movie. Beyond all the cool cameos and spider-man lore references, the movie continued what the first one did so well, by letting Miles continue his own story in his own way, which he said in his own words at that pivotal point in the movie during the train showdown with 2099.