Brabanto's daughter Desdemona secretly gets married to a black general; Othello.
Othello and his friends/ colleges Cassio, Roderigo and Iago arrive in Cyprus and Iago gets Cassio and Roderigo drunk and they have a fight. As Othello was the general he fired Cassio and this really upsets Cassio. while Othello retires with Dedemona.
Desdemona agrees to speak to Othello about Cassio's duty, before this Iago persuaded Othello that Desdemona is in love with Cassio. so when Desdemona came to him about Cassio this raises Othellos suspicion a lot. After Desdemona drops her hancerchief and someone gives it to Cassio.
Iago persists and convinces Othello that Desdemona is unfaithful, so now Othello is planning on what he will do to his wife. during this Iago is setting up for Roderigo to kill Cassio
Roderigo listens to Iago and waits for cassio when he sees him they both get injured. they both cry out but Othello thinks it is Iago attacking Cassio. While this was happening Iago told Othellos maid to go and look what Othello is going to do to his wife.
Othello arrives to Desdemonas sleeping chamber determined to kill her. he accuses her of adultery with Cassio but Desdemona denies it. after this Othello suffocates her with a pillow. The maid arrives and tells Othello about Roderigo and Cassio and sees Desdemona and informs Iago. when Othello hears about the truth he can not forgive himself so he kills himself, while Iago is arrested and taken away and tortured.