It will turn out that Data's consciousness is not in fact lost as they thought at the Daystrom Institute, but is actually hidden away in the depths of Soji's positronic mind, and it starts to manifest and confuse her own personality. One alive, one not. Yet both in pain. So at that point it will be a frantic race against the clock to get Soji to the location of another Soong-type android body that has conveniently shown up out of the
blue (skies, smilin' at me

), and transfer Data's positronic essence from Soji to this new body. And since it will be revealed that Vulcans are actually an ancient species of synths as discussed in the other thread, only a Vulcan High Priestess can facilitate this transfer, the like of which has not been done since ages past, and then only in legend.
You heard it here first, folks.
Kor