Tyler Carson discovers his mother has not died in a car accident, and that she is still alive. So he decides to find a way to go visit her.
There is two ways to travel to her:
A: By normal transportation - maybe have friends helping him, or
B: Highjacking and forcing people to drive him.
He picks B.
His plan was most likely to use guns, knifes, and grenades to force people to drive him to his mother, and killing anyone standing in his way. By good timing, he accidentally ingests an experimental drug his father developed, which gives him the ability to control other people minds - making him more powerful than just with ordinary guns or grenades.
Again, he has the choice to just "mind-control" someone to drive him peacefully to his mother, instead the evil kid decides to take advantage of any person holstering a weapon, and makes them either shoot them selfs, or kill others. All the killings were completely unnecessary for his mission, and took only place for the kids personal amusement.
Although the idea for this episode was genius, I was really upset about the ending, where the kid is made a victim. I was hoping someone puts a bullet in the evil kids brain to stop his killing spree, or at least he is arrested and charged for all the murders he committed, instead they just tell him to go home. I understand it is not his fault he ingested the drug, but it was his personal decision to kill people for his own amusement. It kind of reminds me of when a maniac goes amok shooting people, then the news media makes it look like it's not the shooters fault, but the weapons fault.
Good plot, wrong message!