Sybil knows that there is something off about her next door neighbor, but she can't seem to get anyone to believe her. Everyone is so busy going about their days in the busy streets of New York City that they don't notice Bolivar. They don't notice his odd height, his tiny arms, or his long tail. No one but Sybil sees that Bolivar is a dinosaur.

When an unlikely parking ticket pulls Bolivar into an adventure from City Hall to New York's Natural History Museum, he must finally make a choice: Bolivar can continue to live unnoticed, or he can let the city see who he really is. (Junior Library Guild Selection).