Finlay (a little dinosaur) is sat on a grassy mound, counting jelly beans to share with his friend. A big dinosaur comes along demanding the sweets. He is rude, a bit of a show-off, and doesn't believe Finlay has a friend. As the book progresses we see that the 'grassy mound' is in fact, Finlay's friend, the really, really, really big dinosaur!