Thanks to an unexpected inheritance, Greg Heffley's family has the chance to make major changes to their home. Soon, however, they discover that renovating the house is no easy task. As soon as the walls start to come down, a host of problems emerge. Rotten wood, toxic mold, unwanted bugs, and something even more threatening make Greg and his family wonder if the renovation work is really worth it. When the dust finally settles, will the Heffleys be able to stay in this house... or will they be forced to move to another town?