Who is this hero who will save humanity, a man or a woman?

The Earth is dying. A new war divides people into factions: preaching space drifts in God's hands and trying to relocate to a long-forgotten colony. A small group visited the colony, but what they found there could never have been predicted, not even by Vist. Who is Vist? The last survivor of their race, the only one who makes survival possible.

Two timelines, two worlds, two ways to go...