It's 'bot brains versus 'bot brawn in an all-out war! Sammy Hayes-Rodriguez and his "bro-bot" E are making new friends every day as E works as his bedridden sister Maddie's school proxy. But disaster strikes when E malfunctions just in time to be upstaged by the super-cool new robot on the block, and loses his ability to help Maddie. Now it's up to Sammy to figure out what's wrong with E and save his family!

"Fifth-grader Sammy Hayes-Rodriguez struggles to fit in when his inventor mother requires him to take her latest creation, a robotic 'brother,' to school with him to learn to become a student"--publisher.