One day, Batara Guru got so angry to his daughter. He couldn't control his anger. He shouted and got the word fish to his daughter.
Batara and his wife had their fight because Batara Guro broke his promised.
The mother was shouting for angrily and the earth began to shake then the volcanoes began to erupts. The earth began to form a very big hole, people believed that the big hole become a lake. This begin the Legend of Lake known as Toba Lake.