Part 1: Welcome to the End!

Somewhere in the depths of a dying universe, the last living star is preparing for its final moments. within its bounds, a barren world named nyxon orbits the star, fearing its demise. But.. its living species are looking for a way to prevent this by building a dyson sphere around the star, to make sure they survive for longer. Will they make it? and if they do, what will happen?