Caliban insults Trinculo and they quarrel. Stephano tries to smooth things over but Ariel interferes. As they converse, Ariel, imitating Trinculo's voice, insults Caliban. Stephano comes to his new servant's defense and Caliban convinces him to kill Prospero. He tells the drunk of Miranda, and promises the girl to him if he kills her father. Stephano is excited by the idea, and the three set off towards Prospero's residence. Ariel, hearing their plan, leads them astray, and then leaves to warn Prospero of their plan.
The Tempest: Novel Summary: Act 3, scene 2