Spinach wants to fit in with the other kittens (and secretly dreams of being a superkitty).Because of a malformed chest, Spinach can't play like the other kittens in the shelter. She longs for a blue card on her kennel, which means a cat is bound for Foreverland. Instead, she's whisked away to a strange room full of humans in white coats, where she learns that she has a condition called pectus excavatum. When she awakens after an operation, she finds a plate on her chest and believes it gives her superpowers. She's moved to Fosterland, where she meets another kitten called Chickpea, who looks up to Spinach. The duo escape their enclosure, avoid a giant human, and discover a group of kittens trapped in a strange machine. Can they rescue the kittens? And what happens when Spinach's chest plate vanishes? The second in cat rescuer and internet personality Shaw's series is mostly unconnected to the first. The cats use words and concepts they could not have encountered in their lives while misunderstanding others for effect and plot (Spinach knows what a lasso and ice cubes are but thinks that a cat carrier is a hovercraft). The can-do message is repeated to the point of didacticism. Experienced chapter readers may be put off. Upping the sweetness quotient, Johnson's adorable, black-and-white full-page and spot illustrations are a plus.A bit message-heavy and twee, but feline fans will show up. (information about the real Spinach and Chickpea) (Fiction. 5-7)