Greg Heffley 永远不会改变他懦弱的方式。 总是有人向 Greg 的父亲解释这一点。 爸爸认为他可以让儿子变得坚强，他让格雷格参加体育运动和其他有男子气概的活动。 当然，Greg 能够轻松回避父亲改变他的努力。 但是，当 Greg 父亲威胁要送他去军事学院时，Greg 意识到他必须整装待发，否则就会被遣返。

Let's face it: Greg Heffley will never change his wimpy ways. Somebody just needs to explain that to Greg's father. You see, Frank Heffley actually thinks he can get his son to toughen up, and he enlists Greg in organized sports and other "manly" endeavors. Of course, Greg is able to easily sidestep his father's efforts to change him. But when Greg's dad threatens to send him to military academy, Greg realizes he has to shape up . . . or get shipped out.