A lonely pet fish longs to know what exists in the world beyond her bowl. “I wish I could see over there / Behind the wall, / Behind the chair.” She imagines a giant tree, a wooly goat and a purple sea. She wonders if there could be someone out there who looks like her, so she leans close to the glass and hears some fish-like cries! “Hello? Is someone there?” she hears. “Are you a bird? / Are you a bee? Or are you a fish with fins like me?” She realizes there’s another fish close by and his name is Mike! When Mike asks what her world is like, the amazing watercolor fish has a great idea. “I ll show Mike what I think could be!” Using watercolors, she paints a picture of a world with trees and swirling rainbows. Every day she paints more, “birds that swim, / ships with wings, / and books that do all sorts of things!” Then Mike uses his paint to illustrate more than just the water and the door.