Dad, mom, and Ivan's siblings roar loudly... RIAAR! But the little lion can only say squeak and feels very sorry for that. A little mouse helps him gain confidence in himself and finally, Ivan manages to roar like a lion. How did that happen? The theme of the book addresses the concept of self-confidence and how children can acquire it. With beautiful illustrations and understandable vocabulary, the story entertains young readers while also encouraging them to feel more confident in their abilities.