Lena and Kara have an arrangement, they are friends with benefits. It works best for them and keeps things from getting complicated. But what happens when Lena's ex comes into town and things don't seem as easy as they were before.

What if Supergirl, while being held by Cadmus, without her superpowers, had gotten more injured then Mon-EL thought. What if Cadmus was able to use Supergirl as a weapon on their side. Eventual Supercorp, and Sanvers