Sir K is a valiant knight known for his bravery and chivalry. Despite his fearless demeanor, he stammers and stutters whenever he encounters words containing the sound "kn". These words cause him to quiver and quake, a battle he struggles to win. His fear even extends to his own title as a 'knight', causing him to simply go by 'K'. The king encourages Sir K to confront his fears and grow stronger. Challenged by the king, Sir K takes the leap and bravely pronounces the 'kn' sound without fear. Sir K conquers his fear and proudly pronounces his name and other 'kn' words without any trouble, symbolizing his growth and courage.

This engaging narrative teaches the readers about the 'kn' digraph in the English language, providing a fun and educational experience. The authors, Carol and Richard Young, bring their rich experience in education, library science, and newspaper editing to create this delightful tale. The story encourages readers to face their fears, take a chance, and grow stronger, just like Sir K.