Richard II opens with King Richard presiding over a dispute between Henry Bolingbroke (John of Gaunt’s son) and Thomas Mowbray, Duke of Norfolk. Both men accuse each other of treason, and when Richard cannot reconcile them, he arranges a trial by combat. However, just as the combat is about to begin, Richard stops the fight and banishes both men from England - Mowbray for life and Bolingbroke for six years, later reduced to four.

When John of Gaunt falls ill and dies, Richard seizes his lands and wealth to fund his wars in Ireland, effectively disinheriting Bolingbroke. This act alienates the nobility, who fear their own inheritances are now at risk. While Richard departs for his Irish campaign, Bolingbroke returns from exile with an army, ostensibly to reclaim his rightful inheritance. He quickly gains support from discontented nobles, including the Duke of York, who was left as regent in Richard’s absence.

Richard returns from Ireland to find his support has collapsed and his army has dispersed. After a series of encounters, including a pivotal scene at Flint Castle where Richard realizes his situation is hopeless, he agrees to abdicate. In a formal ceremony at Westminster, Richard hands over his crown to Bolingbroke, who becomes King Henry IV. Richard is imprisoned in Pomfret Castle, where he is eventually murdered by Sir Pierce Exton, who believes he is carrying out Henry’s wishes. The play ends with Henry expressing regret over Richard’s death and vowing to journey to the Holy Land to atone for his indirect role in the former king’s murder.