It has been announced that Inexistence Rebirth will be coming to Steam on May 22. The updated version of Inexistence features some new changes such as gameplay redesigns, a new engine, more areas, and new game modes among other things. Here’s a description of the game’s plot from its Steam page.

“Hald and his sister, Hania, were chosen by the gods to be “Keepers”.
Their shared duty is to maintain order and balance in the world; but peace was not something everyone desired.
Claos, a man filled with dark purpose, decides to plunge Hania in a deep slumber and break the balance.
Hald begins his quest to find Claos and break the spell – throwing him into a vast world full of mystery and danger…”

SOURCE: Press Release