There is gonna be one, but nothing is set yet. they might even backfire the whole thing! If Du want a Spirit 2, type in `Spirit 2 petition' & click on the first link.
anyway, it should be about their life with their foal... But something bad happens. Like the humans rebuilding the railroad oder something.
I think Rain's and Spirit's fohlen will get captured and Little Creek dies, So it is up to the rest of the herd to save their fohlen without getting killed oder hurt Von all the weapons the bad guys have.