its an ensemble piece.
Ashe and Basch are fighting for Dalmasca,
Balthier is fighting to put back the wrongs of his father and clear his guilt so he can be truly free.
Now the other 3.
Vaan and Penelo are trying to find there way in live, towards becoming pirates and are generally good souls helping out some people who have become there friends.
And as for Fran well it seems like she has found the place where she belongs finally and is happy to help Balthier, and lend her knowledge to the others.