Raheem is 9 years old and loves going to school, learning, and fixing things. His favorite activity is playing with the class robot, Astro. He uses Astro to learn all about STEM including how to build robots, program the brain, and use sensors to help robots see the world. One day Astro is not working properly, it can't follow lines or track the flashlight. Raheem is on a mission to figure out what is wrong with Astro. Along with his friends, some quick thinking and problem solving, they make Astro as good as new.