The twentieth century lies hundreds of years in humanity's past. But the near-immortal citizens of the future yearn for the good old days-when people's bodies were susceptible to death through disease and old age. Now, they immerse themselves in virtual reality time machines to explore the life-to-death arc that defined existence so long ago. Jacob Brewer is a virtual reality engineer, overseeing the time machine's operation aboard the starship Aspera. But on the thousand-year voyage to Beta Hydrii, the eight-hundred member crew gets more reality than they expect when people entering the machine start to die.