It's summer vacation, the weather's great, and all the kids are having fun outside. So where's Greg Heffley? Inside his house, playing video games. But Greg's mom has a different vision for an ideal summer… one packed with outdoor activities and "family togetherness." Whose vision will win out? Or will a new addition to the Heffley family change everything?

It's summer vacation, the weather's great, and all the kids are having fun outside. So where's Greg Heffley? Inside his house, playing video games. But Greg's mom has a different vision for an ideal summer… one packed with outdoor activities and "family togetherness." Whose vision will win out? Or will a new addition to the Heffley family change everything?