The crew of the Orville finally get passage through Krill territory to explore the unknown realm beyond known specie where there are no stars. A previous love interest of the Dr boards the ship for this adventure where they encounter an abandoned space station with no visible life signs on board. When one crew member is exposed to some "spores", his body begins to change at a DNA level to become something that the Krill warned are Demons. The crew must find a way to restore power to the ship and find a weakness on this newly encountered life form before any more of their crew are transformed. In a combination of the "Alien" plot and that of the Borg, this episode proves that the unknown might not be the fun exploration adventure that they were hoping for. Beware of what lurks in the shadows of the "Shadow Realm".
—stevehasty