what is the first book of diarry of a wimppy kids plot?

The other person described it perfectly. If you're still curious, however, the author wrote his first book on a website called funbrain.com. In the story he published, he edited it a bit, but the idea is still the same.

It's a new school year, and Greg Heffley finds himself thrust into middle school, where undersized weaklings share the hallways with kids who are taller, meaner, and already shaving. The hazards of growing up before you're ready are uniquely revealed through words and drawings as Greg records them in his diary.

In book one of this debut series, Greg is happy to have Rowley, his sidekick, along for the ride. But when Rowley's star starts to rise, Greg tries to use his best friend's newfound popularity to his own advantage, kicking off a chain of events that will test their friendship in hilarious fashion.

Author/illustrator Jeff Kinney recalls the growing pains of school life and introduces a new kind of hero who epitomizes the challenges of being a kid. As Greg says in his diary, 'Just don't expect me to be all '-Dear Diary' this and '-Dear Diary' that.' Luckily for us, what Greg Heffley says he won't do and what he actually does are two very different things.