Jon Finch is Macbeth, the Scottish war hero whose insane ambition unleashes a cycle of violence. Prompted by the supernatural prophecy of three witches, Macbeth is goaded by his Lady into slaying King Duncan and assuming his throne. Macbeth plunges further into murder and moral decay to keep the unsteady crown on his head. While his father crumbles away in guilt and madness, the haunted Macbeth fights to prevent another dark forecast which may doom him.