Diary of a 6th Grade Ninja Book 10

Wyatt and I have made a deal - if I help him get his ninja clan back then he'll leave me alone forever. So this week, Wyatt and I are building a robot together for a school competition while we figure out how he can win back the red ninjas. I know it sounds like a bad idea, but Wyatt's changed! Well, I think he has... My name is Chase Cooper, and I'm a 6th grade ninja.