There is something off about Robin's new city. Everything there is gray--house facades, people, even flowers. Where are all the colors? Robin sets out in search of color and uncovers a plot: behind all the gray is the faceless Gray Works company. Thanks to her powers of deduction and a few allies, Robin gets into the company's control center and sets all the controls to colorful. In the end, only her cat is left gray.

Torben Kuhlmann-creator of the Mouse Adventures series including the 2019 Batchelder honor winner Edison-uses his love of science and his mastery of illustration to introduce color theory to young readers through his striking visuals and contemporary narrative.