chunk: Meanwhile, Don Pedro's brother Don John, the "bastard prince", plots to prevent the wedding, embarrass his brother, and wreak misery on Leonato and Claudio. He informs Don Pedro and Claudio that Hero is unfaithful, and arranges for them to see John's associate Borachio enter her bedchamber where he has an amorous liaison (actually with Margaret, Hero's chambermaid). Claudio and Don Pedro are taken in, and Claudio vows to humiliate Hero publicly.