Goat is disgruntled because ever since Unicorn arrived, Unicorn has done everything better than Goat. It's not easy to deal with the kind of competition that makes it rain cupcakes! Goat spends some time wallowing in his bitterness, and then he pulls out a (delicious looking) pizza and starts munching away. The smell of it attracts Unicorn. The two engage in a conversation, and Unicorn tells goat about all the super cool things that Goat can do that Unicorn can't, which leads to mutual understanding, friendship, and (view spoiler)[ a happy ending. 
 I adored this book! The premise is good, but the same idea could easily have been ruined by lame illustrations or generic, dull writing. Instead, the pictures are colorful and filled with expression. The writing appeals to both kids and adults, and made me laugh several times. I especially love that a pizza is the impetus for the change in Goat and Unicorn's relationship. 
 I think this book is pretty great! (hide spoiler)]