King Vidurath was a Surya Vamsha king. King Vidurath discovered a huge cavity of Earth in a forest in his Kingdom. A Muni in the forest informed that there was a demon of Patala called Kujrumbha made several such cavities in the forest through which the demon entered and killed the passers by including animals.
The Muni however cautioned the King that the demon had a potent weapon named Sunanda-a Mushala or a Mace which was originally built by Twashta Prajapati. He further told the King that the Mushala on return to the Royal Court, the King consulted his Ministers and asked his sons to take large contingents of soldiers and kill thd demon after locating him.
The demon destroyed the army and imprisoned the Princes. He also managed to abduct the Princess from the Fort and out of bravado stated that none could do any harm to him till he possessed Sunanda the Mace and thus forced her to marry him. But the Princess knew about the ineffectiveness of the Mace if touched by a woman.
The King announced that whosoever could free the princess from the custody of the demon would be wedded to her. An intrepid youth named Vatsandra came forward and killed the demon, since the Mace was ineffective as it was already touched by the princess while being kidnapped. The princess and the youth got married happily.