Fan Casting Supergirl (Season 3)

What if Supergirl was actually good? This is pretty much a redux of the CBS/CW show Supergirl with my own casting, my own ideas, and what I view would be a much better show. In a much darker season, Maxwell Lord continuously tries to defeat Supergirl with a new plan, but with his new experiment: Bizarro. She accidentally kills him and she falls into a depression, right when a new villain, the Mother of Demons decides to show herself and wreck havoc upon Metropolis and the world.