Serpo Protocol. This item is unavailable.Serpo Protocol

A man returns from space... sixty years too late.

He hasn't aged.

He isn't fully human.

And what he brought back may decide the fate of Earth.

When Agent Nolan Vex uncovers a classified cryogenic subject tied to a forgotten program known only as the Serpo Protocol, a chain reaction begins-one that reaches far beyond Earth.

Eva Raines has spent her life chasing the truth behind her father's disappearance in 1965. When he suddenly reappears, carrying something impossible-a living memory encoded in alien technology-she's forced into a war hidden beneath decades of silence.

Across the stars, ancient systems awaken.

The Spiral-a vast, alien network that judges civilizations by their memory, evolution, and survival-has begun its final phase.

But humanity was never meant to pass the test.

As timelines fracture and forces beyond comprehension move into position, Eva, Jiro, and a handful of survivors must make an impossible choice:

Evolve... or be erased.

Because in the end, the Spiral doesn't send a message.

It decides.