Charles Yu is a time machine repairman. One day he sees himself coming out of a time machine and, against all the training advice he's been given, shoots himself in the stomach, flinging himself into a time loop.

Charles Yu is a time machine repairman. One day he sees himself coming out of a time machine and, against all the training advice he's been given, shoots himself in the stomach, flinging himself into a time loop.
A motley crew aboard the Wayfarer, a space-ship designed to build wormholes between parts of space, is given the opportunity of a lifetime but they are aboard their ship for a long time at once, and long-held secrets are about to be revealed.