In the 28th century, due to cooperation between the Earth's countries (beginning with the ASTP of 1975) and extraterrestrial peoples, the former International Space Station has been expanded until its mass threatens to cause it to fall out of orbit. Relocated to deep space using thrusters, it becomes Alpha, a space-traveling city inhabited by millions of species from thousands of planets. A special police division is created by the United Human Federation (a world government formed by a federation of Earth's countries) to preserve peace through the galaxy, including happy-go-lucky Major Valerian and his partner, no-nonsense Sergeant Laureline.
