The fifth case file of the New York Times bestselling Origami Yoda series from Tom Angleberger! Help us, Principal Rabbski. You're our only hope. In their fight against FunTime, the tedious, elective-crushing test prep program, Origami Yoda and the Rebel Alliance have found powerful allies in unexpected places. But the allegiance of one mysterious, all-powerful figure remains to be seen: Principal Rabbski. She says she'll help the rebels—but how? The state standard tests are just a month away, and the FunTime Menace is as strong as ever. With time running out, one rebel decides to take matters into her own hands. The code name for the rogue rebel? Princess Labelmaker! Convinced that the Alliance's case file will persuade Rabbski to join the rebellion, Princess Labelmaker steals it and delivers it right to the principal herself! Will the case file convert the principal . . . or bring about the Alliance's doom?