•Why it earns a slot
Macbeth is the definitive dramatic study of how unchecked ambition, once acted upon, compels an ever-escalating cycle of violence, giving English literature its most searching portrait of tyranny, guilt, and the corruption of conscience.
A celebrated Scottish general, spurred by a prophecy from three witches and the fierce ambition of his wife, murders King Duncan and seizes the throne. His reign spirals into paranoid tyranny as he orders further killings to secure his power, while guilt destroys Lady Macbeth from within. A coalition led by the exiled Malcolm and the grieving Macduff invades Scotland, and Macbeth is slain in single combat, restoring legitimate rule.
This distillation is written from the freely available original, which is always the better read when you have the time: gutenberg.org.