In 2364, Radue, along with other members of the Aldean leadership including Rashella and Duana, revealed the existence of their planet to the Federation starship USS Enterprise-D. The decision was made by Radue in order to solicit the help of the Federation in dealing with the imminent collapse of Aldean society due to what they believed to be sterility caused by a genetic disorder.
When the Enterprise discovered the planet, Radue and others tried to persuade the vessel to help them by leaving some of the children from the ship behind on the planet to carry on their society and culture. When they refused, the Aldeans under Radue's leadership kidnapped several children. Though the crew of Enterprise were incensed, Radue insisted that the children would stay on Aldea and the formidable planetary defense system seemed to guarantee this fact. Radue offered what he believed to be a fair exchange for the children but was refused by Captain Picard.
When Doctor Beverly Crusher revealed that the Aldeans' sterility was in fact caused by radiation poisoning as a result of Aldea's planetary shield weakening the ozone layer, and eventually the children would suffer the same fate, Radue refused to believe her. However, he was ultimately forced to capitulate to Captain Picard when Commander William T. Riker and Lieutenant Commander Data disabled the Custodian, the computer controlling the planet's defenses. After the children were released, the Enterprise helped in repairing the planet's environmental damage, offering hope that the sterility of the society could be reversed. (TNG: "When The Bough Breaks")