Little Aaron can't wait to spend quality time with his new baby sister Mandy so he can explain all about her new world. He talks to her about the future where she will learn all about the important things - animal sounds, high fives, peek-a-boo games, family gatherings and more. Who'll teach her? Aaron will of course! After all, he's been there and he is the perfect person to tell her what's what. Mandy is a lucky little girl.