Third book in the hilarious New York Times bestselling children's sensation! Let's face it: Greg Heffley will never change his wimpy ways, but his father actually thinks that he can get his son to toughen up. When Greg's dad threatens to send him to military academy, Greg realizes he has to shape up...or get shipped out. Greg and his family and friends, who make DIARY OF A WIMPY KID books a must-read for children everywhere, are back at their best in this laugh-out-loud new installment which is sure to please current fans while attracting new ones.