The boy and his grandfather are fishing in the sea. Suddenly they took out the sealed jar in their net. The boy opens the jar, and from there comes the King of the Sea. He forcibly takes the boy in the Underwater Kingdom, to make him his apprentice and marrying him at his only daughter. The boy does not want the whole life to sink ships with people, even to gain wealth. So he pretends that he agrees to the proposal of the Sea King. The deception makes the Sea King to climb back to the jar. Immediately the boy is in the boat with his grandfather and throws the jar into the sea.