The Orville encounters an immense, 2,000-year-aged derelict ship drifting into a star. Mercer, Grayson, Kitan, Finn, and Isaac enter, finding a synthetic biosphere along with a civilization of 3 million who worship an entity referred to as Dorahl. They are really unaware They can be over a ship. Grayson is held prisoner by their theocratic dictator