How to be a Knight for a Day. Hooray! Telly, Abby and Elmo look to the book to tell them how to become knights. First, they have to wear a suit of shining armor. They zip off and whoosh! Elmo, Abby and Telly are dressed in suits of armor. Clank! Clank! Clank! Next, they must sing a knight song, so they sing, "We are Three Knights so Merry. " Then the book tells them they must go on a quest. But they don't know what to search for! As Elmo, Telly, and Abby think about their quest, they hear a whimpering letter "Y." When they ask the letter "Y" why he is crying, he tells them he is unsure of his purpose in life. He can't think of any words that begin with the "Yyyy" sound. That's it! Telly decides their quest will be to look for things that begin with the letter "Y." First, they enter Gina's veterinarian office looking for animals that begin with the letter "Y." Then they decide to check the laundromat but they still can't find any "Y" words. Next, they visit Alan at Hooper's store. Just as they are about to leave, they see a hairy cow passing, but are disappointed because hairy cow doesn't begin with a "Y." But wait! Alan explains that the hairy cow is actually a yak, and yak begins with "y." All of the sudden, Abby, Elmo, and Telly think of other words that begin with the letter "Y," such as yogurt and yo-yo. They did it! They found words that begin with the letter "Y." Elmo, Abby and Telly sing the knight song and cheer in delight!