现在是暑假，天气很好，所有的孩子都在外面玩得很开心。 那么 Greg Heffley 在哪里？ 他在房子里，玩着画着阴影的电子游戏。 Greg 自称是"室内人"，正在实现他的终极夏日幻想：没有责任，也没有规则。 但 Greg 的妈妈对理想的夏天有着不同的看法，她希望这是一个充满户外活动和家庭的夏天。

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 with the shades drawn. Greg, a self-confessed "indoor person," is living out his ultimate summer fantasy: no responsibilities and no rules. But Greg's mom has a different vision for an ideal summer . . . one packed with outdoor activities and "family togetherness."