The Dream Cauldron

I am in my driveway and, after putting a pug in the back of a truck, I go into the garage and see a blond girl, about 9 or 10, who appears to be trying to stargaze in our garage.

Later, I am in front of a single story house, where a boy lives. The dream implies he is the girl's brother, despite the fact they are never seen together.
The boy is "big boned", and looks to be 11.

Apparently, this boy is a jerk (for reasons I can't remember) and a bunch of people decide to hire another boy to impersonate him and ruin his rep. The boy chosen for the job is a very thin boy with round glasses. He looks very nerdy, and has an expansive knowledge of either model airplanes or screwdrivers (can't remember which). He seems to be the same age as the bigger boy, even though he is much smaller.

The rest of the dream is just me on YouTube, watching a movie and trying to find a part of an episode of a TV show.