Shakespeare's Twelfth Night is a comedic play written by William Shakespeare around 1601. The story revolves around themes of love, mistaken identities, and the complexities of gender. It follows Viola, who disguises herself as a man named Cesario after being shipwrecked in Illyria. As Viola navigates her new identity, she becomes entangled in a love triangle involving Duke Orsino, who loves Olivia, a noblewoman mourning her brother. The play explores the humorous consequences of deception and the nature of love, culminating in a series of joyful reunions and revelations.