What would it really take to make the Six Million Dollar Man? A medical thriller on Earth and in space.

Glenn Armstrong Shepard had his sights set on going to Mars as a flight surgeon, but a training accident on the Moon left him crippled. Now he has a new plan: to be fitted with bionic prosthetics and come back even stronger.

Fate and the Space Force have other plans, and Glenn is grounded. Another doctor—his ex-fiancée—takes his place, and Glenn will have to fight to prove he can be an astronaut once more. . . .