Fire Island is located in the eastern sea east of Taiwan Island, dozens of miles away from Taitung. There is a legend about the origin of Fire Island:

At the foot of Ali Mountain lived Ali and Ali's sister-in-law. They had a son named Agou. The couple loved their son so much that they were afraid of melting in their mouths and falling off in their hands. When the weather was cold, they wrapped it in cotton like rice dumplings; when the weather was hot, the couple took turns fanning it until dawn. The son gradually grew up and could talk and walk. The couple loved him even more, "obediently, obediently." What the son wants to eat and play, they do everything possible to find him to eat and play with, but they are always afraid that the son will pout his mouth.

One day after dinner, the couple took their son for a walk outside the door. The moon came out and passed by the top of the mountain opposite. The son saw it, so he pointed to the moon and said, "Dad, I want to play with the moon. Now Dad doesn't know what to do. He said pleadingly, "How can you climb the mountain on the cliff to pick up the moon?" The son didn't listen to that. He shook his body twice and rolled to the ground crying. In the past, when the son rolled around, the parents had to do everything possible to satisfy his request, but now the request to pick the moon stumped his father. The mother hurriedly pulled up the son, patted the mud off his body for him, put her arms around him and said, "Be good, don't roll and cry, Dad will go up the mountain to pick up the moon for you." She turned her head and scolded Ali viciously: "You, what are you doing, Lao Tzu, go up the mountain to pick up the moon for Agou to play with!"

Ali had no choice but to climb the mountain, climbing the vines and stones with difficulty, profusely sweating and shaking his hands and feet. The son at the foot of the mountain kept urging, "Hurry up, hurry up, pick up the moon for me to play with!" Ali climbed the steep cliff, stepped on a piece of turquoise, and rolled down the foot of the mountain with people and bones. His head was open, his hands and feet were broken, and his flesh was blurred like a pile of rotten pumpkins.

Sister Ali hugged Agou to see, her heart was as painful as a knife, and tears flowed down her throat. Her son Agou also kicked his feet and cried, but he was not crying about his father's death, but that his father did not pick the moon down: "Oh, oh, the moon, oh, my father did not pick the moon for me, but lay here to sleep, oh, oh..." Mother also followed her son's wishes and pointed to Ali and scolded, "If you don't pick the moon down for Agou to play with, you should be damned!"

After burying Ali, Ali's sister-in-law still doted on her son and indulged a few sons. The son grew bigger and bolder. Ali's sister-in-law was also old and was called Aunt Ali. Her son developed to steal cattle and grain, and also recruited a gang of bad guys to kidnap, kill, and set fires. The common people suffered deeply, so they organized to fight Agou and these bad guys.

Agou led a group of bad guys to cross the sea and occupied Nanliao Island, killing all the people on the island. He also often took boats to Taitung, Marijuana, and Dulan, kidnapped the people, looted property, and set fire to the village, making people angry. Everyone came to blame Aunt Ali: "You, you spoil the children, and you indulge the children. Now you have caused the families of our ordinary people to be destroyed and unable to live in peace. Don't you feel sad? You are guilty!" Later, the group of bad guys actually snatched Aunt Ali's house, stole her chickens, pigs, and food, and injured Aunt Ali. At this time, Aunt Ali woke up.

So she and the common people prayed to the sky, asking Mazuma to get rid of this disaster. A tall turkey flew down from the sky, with long feet and red flesh hanging under its mouth, like a ball of fire. He came to Aunt Ali's house and said, "Aunt Ali, Mazuma sent me down to breathe fireballs and burn the bad guys on Nanliao Island. Aunt Ali said bitterly, "Agou is not my son, burn it, burn it, burn it, burn all those bad guys!"

The turkey stood on the stone cliff on the coast of Taitung, flapped its wings, raised its head and let out a long cry, opened its mouth, and threw out large groups of red flames, and flew to Nanliao Island in strings. The fire burned on Nanliao Island, and the ash smoke flew, and the flames soared into the sky.

Aunt Ali and the people shouted together, "Burn, burn, burn those bad guys!" The fireballs in the turkey's mouth kept spraying, burning, burning, burning, all the bad guys on Nanliao Island were burned to charcoal, and even the stones were burned red. Aunt Ali did not shed a single tear, but shouted, "Burn, burn, burn well! Burn well!"

Later, people called Nanliao Island Burning Fire Island, and only one town was also called Nanliao Town.