Reduced to miniature size, Franny travels through her pet dog's nostril and into his stomach.

While Annabelle and Aiden are gazing at the night sky, they consider how it was that the universe began. With the help of their new friend Tardigrade Tom, they go on a wild adventure through the beginning of space and time--from the universe's earliest stages to the big bang to learning how we are made of stardust and how we each hold a part of the universe inside us, making us more interconnected than we may think.