Overview
Paperback in Very Good (VG) condition.
Zack is giving Cody a serious headache. When they start working together at the mini-mart, the only thing that ends up getting shelved is Cody's pride. Zack keeps getting all the credit for his brother's hard work! Determined to show Zack who's the boss, Cody asks Arwin to build a robot that will help him at the store. But when the robot malfunctions, will Zack step up and save the day--and his brother's job?