What does Esther 9:1 mean?

On the thirteenth day of the twelfth month, the month of Adar, when the king’s order was about to be carried out, the enemies of the Jews had hoped to overpower them. But the opposite happened—the Jews overpowered those who hated them. Esther 9:1 - Modern Text Bible

(The day meant for the Jews’ destruction becomes the day they defeat their enemies instead.)