The theme of the movie would be how family can be a pain in the ass, but they’re still family. They love us and we love them. Sometimes they do things that annoy us, but later on it’s just a good story. I would show images of the cousins laughing and annoyed with one another. Then, when the youngest boy cousin scares the girl cousins, they’re almost pissed, but they start laughing hysterically. 

BEGINNING: The four oldest cousins are having fun sitting in the living room, leaving out the youngest boy.

MIDDLE: The two girl cousins hear a noise at their window, and a “monster” tries to get through it, making the girls freak out and scream.

END: It turns out the monster was the youngest boy, wearing a disguise; he is very pleased with himself.