A little boy fills his sound box with words beginning with the letters "x, y, z."

Little x, y, and z all have adventures with items beginning with their respective letter's sound, such as x-rays, yellow yo-yos, and zippy zebras at the zoo. Ad

One day in Alphabetland, all the letters came out to begin their alphabet day. All the letters, that is, except for X, Y and Z, who were holed up in Z's house.