Mrs. McReader asked Nerbert if he would come into her class sometimes to help the children learn their letters. Nerbert was quite pleased at the offer.
He began to help all the students who were having troubles with letters, and soon there wasn't a kid in the entire school who didn't know their alphabet - thanks to Nerbert.
One day, as Nerbert was forming letters to the alphabet song in a kindergarten class, his arms somehow became untied! He was finally free from being a giant knot!