Brilliant computer scientist Professor Mitch Daniels unveils his greatest creation: Amie, an advanced quantum AI designed to spearhead an intellectual renaissance. But with the world on the brink of war, she is seized by the military and installed onboard the Sentinel, an orbital space station tasked with protecting the U.S.

Still grieving the death of his wife Kathryn—an astrobiologist devoted to the search for extraterrestrial life—Mitch immerses himself in Amie’s integration. On the eve of his return to Earth, he watches as Kathryn’s final legacy is launched into the stars: Keryx, an interstellar probe sent to seek out intelligent life.

But the probe’s launch disturbs the void.

A rogue fragment of space debris cripples the Sentinel, leaving Mitch stranded. Reviewing the external footage, he is horrified to see Earth being obliterated. The timestamp? Twenty-four hours in the future.

Amie believes the explosion fractured space-time and sent them into the past.

Space Command deem Mitch a delusional threat. When they attempt to shut him down, he severs all communications. Now hunted and alone, he and Amie must race against time to unravel the apocalyptic mystery—and save humanity.