What happens in the final episode of of the fresh prince of bel air?

details please!

for instance... why do they sell their house? stuff like that i want the WHOLE plot line!

I'm not quite sure if this is how everything happened since I haven't seen that episode in ages, but I believe Ashley and Hilary ended up going to live in New York.
Vivian, Phil, and Nicky moved into a new house.
Carlton went to college.
The house was sold to the Jefferson's.
The show ended with Will standing in the empty living room. After he leaves Carlton comes running down the stairs and notices that everyone left while he was using the bathroom.

i loved that show. it was the best. i dunnno maybe, the one where he gets married?

The Banks' sell their house to the Jeffersons (I'm not kidding) and everyone goes their separate ways.

They sell their house, everyone goes on with their on lives; Will stands there, feeling all alone; Uncle Phil reminds him, they will always be family(can't remember where everyone goes off to).