In one village of North Sumatera, there lived a poor farmer named Toba. One day, he went fishing. Luckily, he got a beautiful goldfish. He carried it home and planned to cook it. When he got home, the fish turned into a beautiful woman.
The woman told that she was cursed. She asked Toba to keep it as a secret. Toba agreed it only with one condition that the woman would marry him. Then they got married and soon had one child named Samosir. This boy liked to eat much food.
One day, his mother asked Samosir to bring lunch to his father. On the way to the ricefield, he stopped and ate most of the food. After that, he gave the rest of the lunch to his father. Toba was very angry and shouted at Samosir You, the fish kid, you are so greedy! Samosir cried and ran toward his mother. He asked his mother why his father called him the fish kid.
The woman was really upset that Toba broke his promise. The woman and his son disappeared. Soon there were springs that caused a vast lake. Its called Toba Lake. The land in the middle of the lake is called Samosir Island.
