It seems that Adrien resembles Brittany's sister, Sandra, who allegedly took off with her trust fund two years ago, and hasn't been seen since. They both try to warn Adrien about Brittany, who probably has some devious scheme up her sleeve. At least, that's what you're thinking for the uneventful first hour of this film. Of course, you can't do that today. It's very important that the kids can come see this without dragging their parents to the theatre.
Filmmakers have to create actual plots, themes, and suspense without any actual talent to do so.
Plus, you can't get too intelligent, or you'll lose the audience. Now you're forcing people of mediocre intelligence and talent to dumb down their work. That's how a travesty like The In Crowd can be made. All you get is the silhouette of a breast, a few drops of blood, and endless chattering. By the end of watching this tripe, I started thinking about Brittany's motivations.