In the northern area of Sumatra Island, lived a young man. Everyday, he work hard as a farmer. One day in the morning, the young man went fishing in a river. Not so long after he threw the bait, it was bitten by a fish. He pulled the fishing rod and was amazed by the fish he caught. It was a golden fish. “Wait, please don’t eat me,” the fish suddenly spoke to the young man. Startled, the young man dropped the golden fish and it suddenly turned into a beautiful girl.

“I must have been dreaming,” the young man said to himself. “Don’t afraid, Sir. I was a princess cursed by the gods because a mistake I did. You’ve save me,” said the girl. “As my gratitude, I’m willing to be your wife.” The young man was so amazed to see the beauty of the girl, so he accepted her as his wife. They became man and wife but with one condition, the young man promised not to mention about the fish form of the girl. Terrible disaster will happen if the promise is broken.

A year passed, the young man and his wife already had a son. They were so happy. Their son grew up as a healthy boy. But he was a little naughty. He also had a habit, he was always hungry. One day, the wife asked their son to deliver lunch to his father. But, the son ate the food on his way to the fields. The father had been working since morning. He was so hungry. Finding that there’s no food left for him, he said angrily, “Stupid boy! You little fish boy!” He didn’t realize that he broke the promise.

After he said those words, his son and wife mysteriously disappeared. From their footstep on the ground, there’s water bursting out. The water kept coming out and started to flood the area. The whole village and the surrounding area became a lake. There’s a small island in the middle of the lake, known as Samosir Island. And the lake is known as Lake Toba. ***