From the show:

The Capulet and Montague households have been embroiled in a bloody fight for as long as anyone in Verona, Italy can remember. The death toll is mounting, and it seems that the best thing anyone can do is keep the two sides as far from each other as possible. But when young Romeo Montague crashes the Capulet ball, he falls head-over-heels in love with young Juliet Capulet – and she falls just as in love with him. What ensues is one of the most romantic and devastating love stories in the theatrical canon.