An important theme, or message, in romeo and juliet is the struggle against fate, or forces that determine how a person life will turn out. explain how. Acts prologue establishes the fate of the main characters and introduces the struggles they will face

The obvious function of the Prologue as introduction to the Verona of Romeo and Juliet can obscure its deeper, more important function. The Prologue does not merely set the scene of Romeo and Juliet, it tells the audience exactly what is going to happen in the play. The Prologue refers to an ill-fated couple with its use of the word "star-crossed," which means, literally, against the stars. Stars were thought to control people’s destinies. But the Prologue itself creates this sense of fate by providing the audience with the knowledge that Romeo and Juliet will die even before the play has begun. The audience therefore watches the play with the expectation that it must fulfill the terms set in the Prologue. The structure of the play itself is the fate from which Romeo and Juliet cannot escape.