Gabby Gibson has always had a thing for solving mysteries, and now's her chance to crack her first real case. The cash from Panda Pride Day, her school's big fundraiser, is missing. No money means no dance, and it's up to Gabby to solve the crime-and become the school hero. Oh, and BTW, she'll have to join forces with the world's biggest nerd to find the culprit. Peek inside Gabby's detective notebook and walk the halls of Preston Middle with her as she battles the Queen of Mean and her stuck-up posse, learns that popularity depends on how you look at it, and discovers that people are pretty much never who you think they are.