King Lear opens with an old king who has decided to divide Britain among his three daughters and retire from rule. Before he hands over the map, he asks each daughter to say how much she loves him, intending to give the largest share to whoever speaks best. Goneril and Regan answer with elaborate flattery. Cordelia, his youngest and favourite, refuses to compete and says only that she loves him according to her bond, no more and no less. Enraged, Lear disinherits her and banishes the loyal Earl of Kent for defending her.
A second family mirrors the first. The Earl of Gloucester is deceived by his scheming illegitimate son Edmund into believing that his legitimate son Edgar plots against his life. Edgar is forced to flee and disguise himself as a mad beggar. Across both households the same pattern repeats: a father misreads his children, trusts the ones who manipulate him, and casts out the one who is true.
Once Goneril and Regan have their inheritance, they quickly turn on their father. They reduce and then refuse the train of knights he kept as a mark of his old rank, until the humiliated Lear rushes out into a storm with only his Fool and the disguised Kent for company. On the heath, exposed to the weather and to his own thoughts, Lear's mind begins to break, and his ravings mix with sudden flashes of insight about power, justice, and the poor.
The cruelty deepens. Gloucester, punished for helping the king, has his eyes torn out on stage by Regan and her husband Cornwall. Blinded and despairing, he is led toward Dover by his disguised son Edgar, while a French army arrives under Cordelia to rescue her father. Lear and Cordelia are briefly and tenderly reunited, and for a moment it seems that love might repair the damage done in the first scene.
It does not. The British forces win the battle, and Lear and Cordelia are captured. Edmund's treachery unravels, the sisters destroy each other over their rival desire for him, and Edgar kills him in single combat. But the reprieve comes too late: Cordelia is hanged in prison, and Lear enters carrying her body, howling, before he too dies of grief. The play ends with the kingdom in the hands of the few survivors and with no clear assurance that the suffering bought anything beyond hard-won understanding.