William Mandella, protagonist of The Forever War, lives with his wife Marygay on the icy world Middle Finger, a planet of the Mizar system.

They, along with other Forever War veterans and other disenchanted humans on Middle Finger, hope that whatever they will find upon their return will be more to their liking.

After Marygay and William head away from their planet, a series of unexplained occurrences happen and the ship starts to lose antimatter mysteriously.

The Omni reveals that its race had given the humans and Taurans language and controlled their level of technology, but did not know what caused recent mass disappearances.

[1] After the god's departure, the Omni peacefully reveal themselves to humanity, Man and the Taurans, and all worked together to overcome the detrimental effects caused by the mass disappearance.

F&SF reviewer Charles de Lint praised the novel, declaring "Forever Free is everything good science fiction should be but so often isn't: a grand adventure into what it means to be human, told through rich characterization and thoughtful scientific (not to mention religious) speculation that doesn't lag for a moment.