The first act of Twelfth Night plays a significant role in introducing the main characters, main conflict, main plot, a little about the sub-plot, the theme of love and the nature of topsy-turvy . Without Act One in the play, it would be impossible even to read the book, as we DON'T KNOW WHAT ' S HAPPENING, we knew none of the playground of Viola, why she disguised as a boy and we would not even know why were Sir Toby and Maria etc . playing tricks on Malvolio . Therefore, Act One is indeed the most important act in the entire play . We are going to discuss its structure of main plot and sub-plot first and then its significance of being an introduction of the main element (main characters, main-plot etc. )of the play .

The main-plot of the entire play is hastily revealed as Viola is saved from the storm...