At the edge of the galaxy, there is a giant supercomputer known as the Lighthouse. The only brain powerful enough to navigate ships through a sargasso of naturally occurring wormholes, potentially cutting months or even years off a spaceship's journey. Three humans, one alien, and a nanny bot have manned the remote station for years in relative peace until the arrival of Captain Kongre and his band of cutthroat pirates threatens the future of civilization and reveals that each of the Lighthouse crew has been hiding a shocking secret.

He who controls the Lighthouse controls this part of the galaxy.