Greg Heffley 的压力真的越来越大。 他唯一擅长的是玩电子游戏，但他的父母希望他通过做其他事情来拓宽视野。 当Greg在他的地下室发现一台旧摄像机时，他认为他可能已经发现了证明他拥有非凡才能的东西。 在他最好的朋友Rowley 的帮助下，Greg 计划制作一部恐怖电影，并在此过程中变得富有和成名。

The pressure's really piling up on Greg Heffley. The only thing he's good at is playing video games, but his parents want him to broaden his horizons by doing something—anything!—else. When Greg finds an old video camera in his basement, he thinks he may have discovered just the thing to prove he's got big-time talent. With the help of his best friend, Rowley, Greg hatches a plan to make a scary movie . . . and to become rich and famous in the process.