In Spider-Man: Across the Spider-Verse, Miles Morales embarks on an interdimensional journey to reunite with Gwen Stacy and encounter a host of other Spider-People from different universes. As they face a new powerful threat, Miles must redefine what it means to be a hero in his own universe while protecting the multiverse from total collapse. The film dives deeper into complex themes of identity, responsibility, and self-sacrifice, continuing the visually stunning and emotionally rich narrative established in the first movie.