At the start of the play, The Montague and Capulet servants got into a fight. During the fight, the Prince says that if there is another fight, there will be a dire punishment. In this scene, Romeo also tells Benvolio of his love for Rosaline.
Romeo has gone to the Capulets party with some of his friends, and they dance, sing, and drink. Romeo ideally wanted to see Rosaline, but sees Juliet and they both fall instantly in love.
Benvolio and Tybalt's Death
After the party Romeo sneaks in to the Capulets garden and sees Juliet looking out, on her balcony. They decide to get married in the morning, with help from Juliet's nanny, and Friar Lawrence.
At this part of the play, Juliet tells her parents that she is off to confession but she actually goes to get married in secret with Romeo.
Romeo is meant to meet Tybalt in the streets, but is challenged by him to a duel but Romeo refuses to fight. Mercuito takes up the challenge instead. As Romeo tries to stop the fight, Tybalt kills Mercuito, and in enormous anger, Romeo kills Tybalt. The Prince arrives and hears the full story, and banishes Romeo.
Juliet didn't want to go ahead with the arranged marriage her parents had forced upon her, so Friar Lawrence gave her a drug to make everyone think she was dead. Romeo received the news and rushed back to Juliet. He is distraught and decides to drink some poison. Juliet wakes up to her husband lying dead on the floor, so she takes his dagger and kills herself so they can be together. The two rival families don't fight anymore in the absence of their children.