Esther, a young Jewish woman raised by her relative Mordecai, becomes queen in the Persian court without initially revealing her Jewish identity. Mordecai later uncovers a plot against the king, and the event is recorded in the royal chronicles.

The crisis begins when Haman is elevated to high office. Mordecai refuses to bow to him. Rather than target Mordecai alone, Haman persuades the king to authorize the destruction of the Jews throughout the empire. A date is selected, official orders are sent, and the Jewish communities face a legal threat of annihilation.

Mordecai sends word to Esther. She explains that approaching the king without being summoned can result in death unless the king extends the golden scepter. Mordecai answers that her position in the palace does not guarantee safety and raises the possibility that she has come to royal position for precisely such a moment.

Esther asks the Jews in Susa to fast for her. Then she enters the king’s presence. He receives her and offers to hear her request. Rather than immediately expose Haman, Esther invites the king and Haman to a banquet and then to a second banquet.

Between the banquets, Haman’s pride and anger intensify. He prepares a gallows for Mordecai. That same night the king cannot sleep and hears the royal records read aloud, discovering that Mordecai was never rewarded for exposing the earlier assassination plot. Haman is forced to honor the very man he wants to kill.

At Esther’s second banquet she reveals her identity and explains that she and her people have been sold for destruction. The king reacts against Haman, who is executed on the gallows he prepared for Mordecai. Because a Persian decree cannot simply be revoked in the story, a new decree authorizes the Jews to defend themselves.

The threatened day becomes a day of reversal. The book closes with the establishment of Purim, a recurring remembrance that grief was turned into celebration and a threatened people survived.