Annotation: "Ada, Isaac, and their robot pal Buzz, agents of N.R.G. (National Rescue Group), are on a critical mission. They must stop the nefarious billionaire Alec Trick from cutting off the electricity supply to Zap City. In order to foil his plans, they need to use their knowledge of electricity and magnetism--and readers will too! This exciting, vibrantly illustrated book will have readers on the edge of their seat. As they fight crime with N.R.G., they'll learn key science concepts on Data Blast pages and solve puzzles related to the fun content."--Amazon.com.