What happens
Hastings wakes early to troubling news: a messenger warns him that Lord Stanley dreamed the boar (Richard) would attack. Hastings dismisses the warning, confident in his friendship with Richard and his own position. Catesby probes his loyalty to the crown, praising Richard's rule. Hastings boasts he'll soon send traitors to their deaths. A priest, pursuivant, and finally Buckingham cross his path, each hinting at danger, but Hastings remains blind to the trap closing around him.
Why it matters
This scene is a masterclass in dramatic irony. Hastings, despite multiple omens and warnings—Stanley's prophetic dream, the stumbling horse, Catesby's careful questioning—remains utterly convinced of his safety. His repeated assertions that Richard loves him and that he himself is secure function as tragic irony; the audience knows from Richard's soliloquies in Act 1 that Hastings is already marked for death. Hastings mistakes visibility for sincerity, believing that because Richard shows his feelings openly, he must be trustworthy. This blindness reveals how Richard's mask of plainness actually works—by appearing transparent, he becomes invisible as a threat.
The scene also tracks Richard's network of spies and manipulators closing in. Catesby's questions are designed to test Hastings's loyalty to Richard's ambitions; Buckingham's cryptic remarks about Richard's 'business' hint at what's coming without revealing it. Hastings, by contrast, speaks freely and carelessly, boasting about his power and his role in Richard's favor. His final exit with Buckingham—'I'll wait upon your lordship'—is his walk toward the executioner's block. The scene's genius lies in how it shows Hastings as simultaneously perceptive (he reads Stanley's fear correctly) and fatally blind (he misreads his own position entirely), making his death in the next scene feel both shocking and inevitable.