Tifa and Yuffie both find themselves in a seemingly empty area, completly spanning out forever, endless white as far as the eye can see. The two look around in awe, and then they notice something, they can move!! their doesn't seem to be any gravity, and they can move quite easily now, and they decide to float around and try to enjoy the movement of their bodies. After exploring what little their was, they found that they had been transported to a nearly empty universe, one with no bounds. "Well," they thought, "this universe is really boring, but at least we can move..."
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they can either try to find a way out using what materia they have, or they can take advantage of the place, and do whatever they want...