The Melkotians are an advanced telepathic race from the Alpha Quadrant. They were fearful of outsiders and they destroyed alien species.
No contact between Starfleet and the Melkotians existed until 2268. The crew of the U.S.S. Enterprise made first contact. The Melkotians telepathically communicated with the crew. The Melkotians are able to read minds.
Captain James T. Kirk led an away team to the surface of the planet. The crew illusion the surroundings and the bullets. After contact, the Melkotians forged friendly relations with the Enterprise crew.