No one can believe their eyes but Herb, the plant eating dinosaur, has come to Sesame Street. He is the only dinosaur left except, of course, for his cousin Shirley . While on Sesame Street, he meets so many new people and learns something new from each and every one of them. He learns about healthy salads from Alan, how to take turns from Zoe and Rosita, and that the alphabet is actually made up of letters from Big Bird, Elmo and the birdketeers. Then Herb gets to do something that he has never done before, but has always wanted to. He gets to play with a worm! Overall, Herb's experience teaches him the most important lesson- you're never too old to learn!