Diary of a Wimpy Kid: the Ugly Truth is the fifth book in the Diary of a Wimpy Kid series. Greg Haffley always wanted to grow up soon. But little did he know that the process of growing up dumps you with a lot of responsibilities and doubts, apart from the various changes that happen to you mentally and physically when you venture out of your carefree childhood age. In middle school, Greg faces issues ranging from problems with his best friend and discussions related to the onset of puberty, to his mom's decision to start school again and so on. Will he miss his childhood in this process? Like the other books in the series, Diary of a Wimpy Kid: the Ugly Truth presents Greg's life at this phase of "growing up" in a comical way.