In Act 3 Scene 1 of Romeo and Juliet, a fight breaks out between Mercutio and Tybalt when they encounter each other in Verona. Despite efforts by Benvolio and Romeo to stop the quarrel, Mercutio is fatally stabbed by Tybalt. Enraged by his friend's death, Romeo seeks revenge and kills Tybalt. As a result, Romeo is exiled from Verona by the Prince. This pivotal scene marks the transition in the play from romance to tragedy.