The play opens with Roderigo, a rich and dissolute gentleman, complaining to Iago, a high-ranking soldier, that Iago has not told him about the secret marriage between Desdemona, the daughter of a Senator named Brabantio, and Othello, a Moorish general in the Venetian army. He is upset by this development because he loves Desdemona and had previously asked her father for her hand in marriage. Iago is upset with Othello for promoting a younger man named Michael Cassio above him, and tells Roderigo that he plans to use Othello for his own advantage.