The Arcturians live on large spheres which are inside a shell that resembles a small planet. When they come out of their shell, they move to other solar systems to destroy all the planets. Their job is to take control of the Milky Way galaxy and get it ready for their partners, the Colossians who live in the Owl Nebulae to come here and take control of our galaxy. Together, they have invaded eight galaxies and rule the people who live in them. The Federation are the next people they will do battle with, and already, the Arcturians have destroyed many solar systems and are spread throughout the galaxy. They also have a spaceial tube which the Arcturians control to open a gateway between the Owl Nebulae and the Milky Way. The Federation of Planets have many warships which is a combination of other species in the Federation. Commodore Trent, aboard the battlecruiser Intrepid, has a large science crew with him as Dr Sampson's ship was accidentally destroyed when it was thought to be a derelict ship in a firing range. Dr Sampson is the first person to contact the Arcturians and discover they were not as friendly as they made out.As battles are fought throughout the galaxy, it is up to Admiral Marcus and his war fleet to stop the invasion and save the lives of billions of people.