Heart of stone

It happened a long time ago, in one distant kingdom. There was this wise and fair king at the kingdom and he had his beloved daughter, the young princess, so beautiful that the glory of her beauty flew far beyond the kingdom. And there lived a kingdom in peace and prosperity year after year. Until one day did not come trouble. The rumor of the beauty of the princess reached a huge stone giant who decided to steal the main treasure of the kingdom. The best wars came to protect the fortress walls, but they could not resist the giant. A huge monster tore off the tower of the princess and carried her away, together with the princess herself.
The king, heartbroken, summoned those who dare to save the princess and defeat the giant. Many went to battle with the giant but no one came back. And when hope seemed completely lost, a commoner, the son of an urban blacksmith, ventured after the princess, but the giant was not so easy to defeat. For this, the smith found the heart of a comet, forged a magic sword out of it, and smashed the giant near the shore of the sea, and on the spot where the giant was struck, a majestic castle was built ...