Christopher Burke and his crew of NASA astronauts are the first human beings to walk on the surface of Mars. Their return to Earth was supposed to be a momentous day. But a surprise is waiting for them there that’s beyond imagining.

Safe after a treacherous landing in Florida, the crew emerges to find the unthinkable: every man, woman, child, and animal has vanished without a trace.

It’s not a dream.

It’s not a trick.

It’s real.

Alone now on their home planet, the crew sets out to discover the extraordinary secret behind the disappearance of mankind. And whether or not everyone can be brought back.

But they may not be as alone as they thought.