Here is a two paragraph summary of Act II, Scene iv of Henry V:

The scene takes place in the French King’s palace, where the French King Charles VI presides over a council of war with his nobles, including the Dauphin, the Constable of France, and other lords. The French King acknowledges the threat posed by the approaching English forces under King Henry V, and urges his nobles to prepare their defenses seriously. The Dauphin, however, takes a dismissive and contemptuous view of Henry, arguing that the English king is a frivolous young man who should not be taken seriously as a military threat. The Constable of France pushes back against the Dauphin’s assessment, reminding him and the court that Henry comes from a line of formidable warriors, and that England has historically proven itself a dangerous enemy to France.

The discussion is interrupted by the arrival of Exeter, who has been sent as an ambassador from King Henry V. Exeter delivers Henry’s formal demand that King Charles surrender his crown and kingdom to Henry, based on Henry’s claimed genealogical right to the French throne. Exeter delivers the message with authority and gravity, making clear that failure to comply will result in war and the suffering that comes with it. He also delivers a separate and pointed message to the Dauphin, conveying Henry’s personal displeasure at the Dauphin’s earlier mockery of sending tennis balls. The French King requests a day to consider his response, and Exeter agrees, setting the stage for the conflict to follow.

Henry V follows the young English king as he transforms from the wayward Prince Hal into a decisive military leader. The play opens with Henry’s court debating his claim to the French throne through his great-great-grandmother’s lineage. When the French Dauphin mockingly sends Henry tennis balls as a gift, suggesting he should stick to games rather than warfare, Henry uses this insult as justification to invade France. He sentences three conspirators - Cambridge, Scroop, and Grey - to death for plotting against his life, then sets sail for France with his army.

The English forces land in France and lay siege to Harfleur, which Henry captures after his famous “Once more unto the breach” speech. However, his army is weakened by disease and casualties. Meanwhile, we follow the tavern companions from Henry’s youth - Pistol, Nym, Bardolph, and Hostess Quickly, who reports the death of Falstaff. The English army, vastly outnumbered, faces the French at Agincourt. On the eve of battle, Henry disguises himself and walks among his soldiers to gauge their morale, engaging in philosophical discussions about kingship and responsibility.

The Battle of Agincourt proves to be a decisive English victory despite overwhelming French numerical superiority. Henry orders the killing of French prisoners when he believes the French are regrouping, and becomes enraged when he discovers French forces have killed the English boys guarding the baggage train. The English suffer minimal casualties while French losses are enormous. The play concludes with Henry’s courtship of Princess Katherine of France, conducted partly in broken French and English. Their marriage seals the Treaty of Troyes, which names Henry as heir to the French throne, though the Chorus epilogue reminds the audience that Henry’s son would later lose these French territories.