Romeo & Juliet.

In Verona, bad blood between the Montague and Capulet families leads to much bitterness. Despite the hostility, Romeo Montague manages an invitation to a masked ball at the estate of the Capulets and meets Juliet, their daughter. The two are instantly smitten but dismayed to learn that their families are enemies. Romeo and Juliet figure out a way to pursue their romance, but Romeo is banished for his part in the slaying of Juliet's cousin, Tybalt.