A super game of hide-and-seek turns into a rescue mission. Superman and Krypto the Super-Dog are flying high over the city of Metropolis enjoying a game of hide-and-seek. When Superman flies into a cave high in the mountains, he doesn't suspect a chunk of kryptonite lurks within the cave's walls. Weakened by the substance of his homeworld, Superman must count on Krypto to save the day. This early reader is charmingly illustrated with bold, approachable lines and a simple color palette that will spark young readers to break out their own crayons and draw some new adventures for the Man of Steel. The story's simplicity is neatly geared to those familiar with the broad strokes of Superman but not up to the nitty-gritty details of his decadeslong mythology quite yet. The text is full of standard sight words, making this an excellent read for those just starting both to read and to get into the world of superheroes. There's one citizen in Metropolis that's a person of color, but Superman's world remains a mostly white one. A super early reader title. (Early reader. 4-7) Copyright (c) Kirkus Reviews, used with permission.