Othello tells the story of Othello, a Moorish general in the Venetian army who has secretly married the beautiful Desdemona against her father's wishes. Iago, Othello's ensign who is jealous of Cassio's promotion, seeks revenge on Othello by manipulating him into believing Desdemona has been unfaithful with Cassio. Through deception and manipulation, Iago is able to turn Othello violently jealous and distrustful of his wife, ultimately driving Othello to murder Desdemona. The play is set primarily in Venice and explores themes of appearance versus reality, revenge, jealousy, and race.