It's a big week for Azaleah Lane. The principal, Ms. Li, is choosing a third grader to be the STEM lab monitor, and Azaleah's name is the one picked! But the week doesn't go quite as planned. First Azaleah gets paired up with a bossy classmate for a group project. Then the STEM lab guinea pig goes missing—on Azaleah's watch! Can she use her scientific thinking and detective skills to get to the bottom of things before it's too late? Or will Azaleah Lane go down as the worst STEM lab monitor ever?