A king has 4 sons who were worriers. After two years, the oldest son didn't like his Father so he tried to kill him in war. During the war whoever won was to become king. The son got stabbed and died.
After his death, the Kings son was sent to the underworld, he was very bitter and he hated it, so he decided to get revenge on his Father and the people on earth. He gathered everyone from the underworld and went to war against the King and his army.
The war went on for 5 years but the underworld lost after a ferocious bomb killed many of them. The king had a party which went on for two weeks and the underwould never became involed with earth again.