The art dealer successfully possesses the main character’s body but he quickly dies because a cop pulled him over on his way out of town and he reached for his ID a little too quickly.
All of the other party attendees die under somewhat similar circumstances because none of them had been taught as children on how to act in a black body so as to not be shot and killed for something trivial and mundane, like sitting on their own couch.
Overcome by this news and the bewildering fact that being black is its own horror movie the Armitage family members–each having already possessed a new body by now–make terrible financial decisions, lose everything, and live out the rest of their lives as a black family suffering under the crushing weight of poverty.
With the way their country is set up against anyone in a black body, the Armitage family never escapes poverty and they realize that their brain transplant experiments have successfully ruined the lives of their children, their children’s children, and so on.
And, finally, after having exhausted all other possibilities, the Armitage family accepts their predicament and tries to make their country better for black people, for themselves. They fail miserably and become bitter.
The end.