In 1943, a British fighter plane crashes in Nazi-occupied France and the survivor tells a tale of friendship, war, espionage, and great courage as she relates what she must to survive while keeping secret all that she can.

In the aftermath of a NASA rocket launch gone terribly wrong, Captain Calli Chase comes face-to-face with her missing twin sister - as well as the startling truth of who they really are. Now, a top secret program put in motion years ago has spun out of control, and only Calli can redirect its course. Aided by cutting-edge technologies, the NASA investigator and scientist turned Space Force pilot sets out on a frantic search for the missing link between...