Macbeth and Banquo return victorious from battle, having defeated the traitorous Thane of Cawdor. Their success draws the attention of three witches on the battlefield, who greet Macbeth with bizarre prophecies: he is destined to rise from the Thane of Glamis to Thane of Cawdor, ultimately claiming the crown. They also foretell that Banquo will be the ancestor of a line of kings. Following this revelation, King Duncan orders the Thane of Ross to execute Cawdor and bestow the title upon Macbeth.
As Macbeth learns that Duncan has named his son Malcolm as the Prince of Cumberland, he feels a mounting sense of alarm; this development poses a significant obstacle to his ambition for the throne. Unable to contain his excitement, Macbeth writes to Lady Macbeth about the witches' predictions. When Duncan plans a visit to Macbeth's castle, Lady Macbeth persuades her husband to carry out a heinous act—regicide. She intoxicants the King's guards, and in a moment of hesitation, Macbeth ultimately succumbs to her pressure and commits the murder. The next morning, Macduff, the Thane of Fife, uncovers the gruesome scene, while Macbeth deceptively kills the sleeping guards to erase his involvement. Fearing for his life's safety, Malcolm flees to England, leaving Macbeth to ascend as the new King.
Haunted by the prophecy concerning Banquo, Macbeth devises a plot to eliminate him and his son, Fleance. Macbeth's hired killers successfully murder Banquo, though Fleance manages to escape, leading to a tense chase orchestrated by the character of Ross, who plays a critical role as the Third Murderer.
As time passes, Macbeth grows increasingly paranoid and tyrannical. During a royal feast, he experiences a disturbing hallucination, confronting Banquo's ghost while embarrassing himself before the court. Lady Macbeth intervenes, dismissing the guests and seeking to sedate her husband. During one of Macbeth's trances, the witches reappear, presenting chilling visions: they caution him about Macduff, inform him that he will reign until Great Birnam Wood moves to Dunsinane Hill, and assert that he cannot be harmed by anyone born of a woman. In response, Macbeth orders the annihilation of Macduff's entire family, although Macduff himself has escaped to England.
Meanwhile, Lady Macbeth is tormented by guilt, leading her into a downward spiral that culminates in sleepwalking and madness. Ross discreetly visits England to inform Macduff of his family's tragic fate, igniting a fire of vengeance within him. In a bid to rally forces, Malcolm enlists help from the English, and they camouflage themselves with branches from Birnam Wood, fulfilling the prophecy as they march toward Macbeth's fortress at Dunsinane.
In the midst of her turmoil, Lady Macbeth meets her tragic end, deepening Macbeth's despair. Yet, he remains firmly convinced of his own invulnerability. The inevitable clash occurs when Macduff confronts Macbeth, declaring himself not born of a woman but “untimely ripped” from his mother’s womb. Initially resistant, Macbeth eventually accepts the challenge. In their duel, Macduff prevails, and in a pivotal moment, beheads Macbeth, bringing the final prophecy to fruition.
With Macbeth defeated, Malcolm is declared the new King of Scotland, while Fleance, having survived the turmoil, is secretly whisked away by Ross, suggesting a future beyond the tragedy that has unfolded.
