Greg Heffley's wimpy ways will never change. Someone needs to tell Greg's father about this. Frank Heffley, you see, believes he can toughen up his son by enrolling him in organized sports and other "manly" pursuits. Greg, of course, is able to effortlessly avoid his father's attempts to mold him. When Greg's father threatens to send him to a military academy, he understands he needs to change... or else.