What happens
Leonato's brother Antonio enters with news he's overheard: Don Pedro plans to woo Hero tonight at the masked ball, intending to declare his love publicly. Antonio suggests Leonato prepare Hero for this proposal so she can respond gracefully. Leonato decides to tell his daughter immediately, wanting her ready to answer if the rumor proves true. He sends Antonio to inform her while he attends to party arrangements.
Why it matters
This brief scene plants a crucial misunderstanding that will drive the play's central plot. Antonio's secondhand report—overheard from servants in the orchard—is both accurate and misleading. Don Pedro genuinely plans to woo Hero, but not for himself; he intends to win her on Claudio's behalf. Yet Leonato and Antonio accept the information at face value, believing the prince woos for his own heart. This gap between what the audience knows and what these characters know creates dramatic irony. The scene shows how easily misinformation spreads in a house full of servants, messengers, and eavesdroppers—a theme the play will return to repeatedly, especially when false sightings and overheard confessions drive the main tragedy.
The scene also reveals parental authority and feminine obedience as operating forces in Messina's social world. Leonato immediately accepts Don Pedro's presumed suit as honorable and beneficial, never consulting Hero's actual feelings before instructing her to be 'prepared.' Hero is expected to respond gracefully to whoever courts her, with her father's blessing determining her consent. This passive acceptance foreshadows her vulnerability later in the play—she has no agency to defend herself when publicly accused. Antonio's readiness to deliver his brother's instructions without question mirrors the unquestioning obedience expected from women. The scene is brief and functional, yet it establishes the power structures and informational chaos that will shape everything to come.