Pied-Piper of Hamelin
 

    The town of Hamelin was suffering from a terrible plague of rats. The town council tried everything to get rid of them, but couldn't. At last, the Mayor promised a big reward to anybody who could put an end to the plague.

    Astranger dressed in bright clothes arrived and said he could rid Hamelin of the rats. At night, the stranger began playing a tune on his flute, drawing all the rats out of the houses and barns and into the river, where they drowned.

    The Mayor would not pay the piper because he said that playing a flute was not worth the reward. He ordered the piper to leave Hamelin.

    But the piper came back one day, and started to play his flute. This time, all the children followed him, and he left the village towards the mountains. Suddenly, a cave opened in the mountain and the piper and all the children went in. The cave closed behind them and the children were never seen again in Hamelin.

http://easyenglishdus.blogspot.com/2010/

2. What is the main idea of paragraph three?