By the early 25th century, Rana 3 hosts a farming colony of the Union, featuring a population of over 100,000 people. However, its size and lack of military defenses make it a target of the Krill.
In the winter of 2419, the Krill destroyer Yakar targets Rana 3 for an attack using a prototype weapon: the neutron field generator, theoretically capable of destroying all life on a continent within a matter of minutes. Undercover Union officers Ed Mercer and Gordon Malloy successfully undermine their plans just as the Yakar enters Rana 3's orbit. Realizing that the Krill are extremely sensitive to ultraviolet radiation, Mercer and Malloy manipulate the ship's lights to produce a lethal level of brightness, wiping out the vast majority of the crew and saving Rana 3. Though the Yakar's automatic controls launch the weapon at Rana 3, Gordon successfully destroys it mid-flight with the ship's torpedoes.