"The Pied Piper" is a famous tale about a mysterious man who arrives in the town of Hameln to help solve a rat infestation. He offers to rid the town of the rats in exchange for payment. The townspeople agree, and the piper uses his magical flute to lure the rats into the river, where they drown. After completing the task, the townspeople refuse to pay him the agreed amount. In retaliation, the piper plays his flute again, this time enchanting the children of Hameln. He leads them away, teaching the townspeople a lesson about keeping promises.