The primary theme of Shakespeare's "Hamlet" revolves around revenge and the moral implications that come with it. The play tells the story of Prince Hamlet, who seeks to avenge his father's murder by his uncle Claudius, who has assumed the throne and married Hamlet's mother. Throughout the play, themes of betrayal, madness, and the complexity of human nature emerge as Hamlet grapples with his inner turmoil and existential questions. The quest for revenge ultimately leads to a tragic conclusion, highlighting the consequences of unchecked ambition and moral ambiguity. "Hamlet" remains one of Shakespeare's most analyzed and performed works.