Complex sentence: The film starts off at night with Spider-Man jumping from building to building, following a stolen car by two crooks and is angry that he has to do this because he has a date with his girlfriend Gwen Stacy.
Split into simpler sentences: The film starts off at night with Spider-Man jumping from building to building, following a car stolen by two crooks. He is angry that he has to do this because he has a date with his girlfriend Gwen Stacy.