Decades after the the second decade of the twenty-first century, Earthwas torn apart by a catastrophic event. The Humans survivors lived in a bunker under the ruins of the planet called the Lighthouse.However, the Kree came to the spacestaion and restored the order, but they also destroyed every document about the life on Earth, so the Humans would focus on work. The ruler of the Lighthouse was Kasius,  whose father banished him from Hala.
For Kasius to profit from his unwanted staying in the Lighthouse, he forced every human to be exposed to the Terrigen Mist and enslaving those who became Inhumans. He then offered them to potential buyers from across the galaxy that wanted the Inhumans for their powers.
I lost track of this show when we moved and never bothered to catch back up. It was getting a little political and the eye candy wasn't enough to overcome its shortcomings.
Maybe he turns out to be a Life Model Decoy.