In this new illustrated middle-grade series from James Patterson, an extraordinary robot signs up for an ordinary fifth grade class... and elementary school will never be the same!It was never easy for Sammy Hayes-Rodriguez to fit in, so he's dreading the day when his genius mom insists he bring her newest invention to school- a walking, talking robot he calls E - for "Error". Sammy's no stranger to robots - his house is full of a colourful cast of them. But this one not only thinks it's Sammy's brother... it's actually even nerdier than Sammy.Will E be Sammy's one-way ticket to Loserville? Or will he prove to the world that it's cool to be square? It's a roller-coaster ride for Sammy to discover the amazing secret E holds that could change his family forever... if all goes well on the trial run!