ever heard of the "peid piper"

minstril wanders into rat infested town and wants to help people. so makes rats follow him out of town and into river where they drown. demands payment from topwnsfolk but in greed mayor denies once, minstril returns and demands again mayor turns him away and he threatens a horrible fate if they do not pay. demands 1 more time but when he is not payed he plays his flute and marches all they children out of the town. they are never seen again.

this fairy tale is based on the crusade. monks would go to towns and cause supposed miracles, and he would rally the men of the town to go on the crusade and later many children tried a similar crusade. follow the monks out of town and onto the long journey leading to enevitable enslavment.