Swamp Horror is celebrating his birthday when he and his friends discover that D.K. Pitt is planning on putting a water park next to Monster Manor, and they must stop him before he removes their toxic swamp water and replaces it with clean water that will destroy Horror's home.
Greg Heffley recounts his daily experiences during summer vacation as he tries to live out his ultimate fantasy of spending the days indoors playing video games with no responsibilities and no rules, despite his mother's attempts to pack the summer with outdoor activities and family fun.
David climbs the hill behind his house and meets the Phoenix that lives there, and together they embark on a series of adventures that includes finding ways to outwit the scientist who wants to capture and study the mythical bird.
David and his family take a camping trip on which David is allowed to bring his two best friends, but things start turning bad when they get lost in the woods.
Tired of getting in trouble for his bad manners, David Mortimore Baxter uses his experiences to write a guide about etiquette, discussing neighbors, embarrassing moments, eating, the bathroom, and much more.
