Princess Labelmaker to the Rescue by Tom Angleberger (author) (UK edition)

The Origami Rebellion continues at McQuarrie Middle School! Our heroes must stick together and use their Star Wars puppets for a new set of challenges. Under the leadership of Tommy, they must rescue their lost comrade Mike, protect their pal Murky from a nasty attack, put on a musical version of “Olivia” Twist and face a final showdown with the school board and Professor Funtime himself! To battle the professor, they’ll need to recruit a powerful ally… Principal Rabbski! But can Dwight, Tommy, Sara and the gang actually get her to join the Rebellion?