Transhuman and Supers

[Lameth]

I am thinking about a hard science Sci-Fi, in our solar system only, and then maybe mixing it with low level supers. Earth based, and other locations. My idea is a super game mixed with sci-fi and maybe even some dark supernatural way down the road.

The PCs will have minor powers, maybe psionics or moderate level abilities, like magnetism or fire control. access to cybernetics would also be allowed, or gene splicing.

Im just trying to think of the "hook", how to get the two themes to merge and feel right. How to get a medium level supers game to mix with hard sci-fi [ala Aliens or Covenant]. How did powers manifest? was it a comet in the sky and then people started to get powers, or perhaps over use of gene control on the populace?

And then from there im trying to work ok general plot outlines. For a fantasy game, its base is heroes fighting evil and exploring. For supers its see bad guy, beat up bad guy, save the world. Well is it the same themes in a hard sci fi with supers? Some help getting over this metal hump would be great also.

Basically any help would be great. thx