On June 7, 2114, the Earth Survey Ship Aurora disappeared near Jupiter, leaving no trace behind as to its destination, nor as to the fate of its crew. On July 20, 2134, the ESS Aurora returned, carrying with it all the horrors of the void, but also with the promise of information gathered from its ghastly inter-dimensional and time travels. It falls to the people of a secret United Earth agency, the OAR, to negotiate for what the ghostly vessel offers, and the Aurora always demands a sacrifice in return.