Diary of a Wimpy Kid: Fight or Flight (Book 21)

Nobody knows how to survive the rough - and - tumble halls of middle school better than Greg Heffley. In fact, he's got A three-ring binder chock-full of notes on his school's biggest bullies - along with his hard - earned strategies for how to outsmart them. But when Greg's binder falls into the wrong hands, his world starts to unravel. Now it's a race against time before the bullies discover the identity of the person behind it. Greg has learned to roll with the punches, but now he's backed into a corner with no good options. Will he throw in the towel, or go down swinging?