X is Cool tells the story of Letter X, who feels sad because he does not start as many words as his vowel friends: A, E, I, O, U and Y. While X goes through each vowel and lists the cool words they start, the Vowels jump in to help X understand he is important too. X realizes being first does not always mean you are the best; sometimes, you are the best by helping others to be first. Letter X learns being himself and helping his friends is the secret to happiness.
