the Montagues and the Capulets. Exciting! After the swords are sheathed, Verona's Prince shows up to say that the next person who fights is going to get killed, and he means it this time.
Along comes Romeo Montague, mooning over some chick named Rosaline. Meanwhile, Juliet Capulet, age thirteen, has just heard that Verona's most eligible bachelor Paris has his eye on her. They're going to check each other out that night at a masquerade ball at the Capulets' house. (At least it's parentally sanctioned child abuse.) Romeo and his friends have decided to crash the Capulet ball—in costume—because Rosaline is on the guest list.