The group decides to hunt down the source of the destroyer signal in an effort to turn it off. Travelling 15,000 light years from Earth, they find it is being broadcast from an abandoned space station. Exploring the inner portions of the station, which is a large museum, they are individually drawn into a series of visions that reveal different aspects of the nature of the destroyer and its history. The traveller signal had arrived relatively late in the history of the galaxy, in the midst of flourishing communications via macroscope. Armed with the ability for interstellar travel, wars broke out that destroyed countless civilizations. The destroyer station, one of six in the galaxy, was set up to prevent this until the races reached the required level of cultural sophistication, if they ever did.