Nelson and Kenny are happy. They got a really crazy gift, robotic twins! that look just like them! But there are some small differences: the robots are stronger than Nelson and Kenny, faster and even smarter. When things get complicated at school, Nelson and Kenny use their sophisticated robots until they get out of control and break down. Now will the real Nelson and Kenny be able to save the day? Ninja Boy, the hit series written by Anne Doe, was a resounding global success. Ninja Boy - Twice Ninja is the fifth book in the series
