Fight or Flight (Diary of a Wimpy Kid #21): Volume 21 by Jeff Kinney *PREORDER*

Release Date 10/20/26

Greg Heffley is about to learn that surviving middle school is no easy feat.

In Fight or Flight, the 21st book in Jeff Kinney's globally bestselling Diary of a Wimpy Kid series, Greg's hard-earned expertise on navigating the rough-and-tumble world of middle school is put to the test.

When a secret binder filled with Greg's notes on the school's biggest bullies falls into the wrong hands, his world quickly begins to unravel. Now it's a race against time before the truth comes out. Will Greg throw in the towel--or go down swinging?

A hilarious read for kids ages 8-12, packed with classic Wimpy Kid humor, unforgettable middle-school drama, friendship twists, and Jeff Kinney's signature illustrations

Please note: If your preorder includes books with different release dates, your order will not ship until all titles have been released. If you’d like to receive them separately, please add a Split My Order to your order.