Eventually, Viola (still disguised as Cesario) and Orsino make their way to Olivia’s house, where Olivia welcomes Cesario as her new husband, thinking him to be Sebastian, whom she has just married. Orsino then gets furious at Cesario for betraying him.
Sebastian then walks in and there is confusion
But then Viola reveals that she is actually Cesario.
The siblings reunite joyfully and Orsino then realises that he loves Viola .
When he realises that she is a woman and asks her to marry him.
Olivia and Sebastian get to know each other and fall inlove, Viola becomes Duchess and marries Duke, in the end everyone is happy.