Big Mao and Er Mao are brothers. They discovered iron ore in the mountainous area and started an iron ore business. They made huge profits and aroused the jealousy of the underworld. The underworld wanted to forcefully acquire their mines, but they sternly refused. Therefore, the underworld attacked their family, and the daughters-in-law of Da Mao and Er Mao were killed by the underworld. They also want to eradicate the roots and hunt down Ermao and his sister-in-law Xiaoye. Ermao and his sister-in-law went through many difficulties and hardships, and finally got their revenge and successfully redressed their injustice.
