There was a handsome man named Batara Guru Sahala. He liked fishing.
Please set me free! Don't eat me.
One day, he caught a fish. He was surprised to find out that the fish could talk. The fish begged him to set it free.
Batara could not bear it. He made the fish free. As soon as it was free, the fish changed into a very beautiful woman.
She attracted Batara Guru so much. He fell in love with that fish-woman. The woman wanted to marry him and said that Batara Guru had to keep the secret, which she had been a fish.
I promise not to tell anyone about it. So let's get married
I would marry you but in exchange, you should not tell anyone about my secret.
Batara Guru agreed and promised that he would never tell anybody about it.They got married happily. They had two daughters.
The mother was very annoyed. Batara Guru broke his promise. The mother was shouting angrily. Then the earth began to shake. Volcanoes started to erupt. The earth formed a very big hole. People believed that the big hole became a lake. Then this lake is known as Toba Lake.
One day, Batara Guru got very angry with his daughter. He would not control his madness. He shouted angrily and got the word of fish to his daughters. The daughters were crying. They found their mother and talked to her about it.