what happens to jim as the story comes to a close?

Jim is set free. He finds out he is no longer a slave and he wants to join the rest of his family.

Jim is a free man and respected by the family for his actions;

"We had Jim out of the chains in no time, and when Aunt Polly and Uncle Silas and Aunt Sally found out how good he helped the doctor nurse Tom, they made a heap of fuss over him, and fixed him up prime, and give him all he wanted to eat, and a good time, and nothing to do. And we had him up to the sick-room, and had a high talk; and Tom give Jim forty dollars for being prisoner for us so patient, and doing it up so good, and Jim was pleased most to death..."

Jim also wants to go to the Free states and buy his family back.