Zack can t wait to test out Sara, the new Super Advanced Robotic Assistant that his dad s been working on. At first she s great and super helpful! Sara helps Mom unpack clothes for her store at lightning speed. She plays catch with Luna. And she turns into a one-bot band for the twins. But when Sara develops a huge crush on Zack, the fun is over! Can Zack figure out a way to fix this mixed-up robot?

Zack is happy to test a new android his father helped develop for Nebulonics before she goes into production, but her ability to learn causes problems when she develops a crush on Zack after watching a romantic movie. Book #9