Henry Hart has a secret. Kid Danger. That's who he really is. Of course, nobody knows that. Not really... not yet. But what will happen when his true love falls in love with Kid Danger? How can he hide the fact that the weird Henry kid... well... that's Kid Danger.

It's summertime, and Greg Hefflley is looking forward to playing video games and spending time with his friends. However, Greg's dad has other plans: He's decided that some father-son bonding time is in order. Desperate to prevent his dad from ruining summer vacation