For 3.5 years, 250 hand-picked volunteers lived sealed inside a self-sustaining biosphere, simulating life on Jupiter’s moon Europa. Their mission: prepare humanity’s first interplanetary colony. Their lifeline to the outside world? Century Intelligence—CI, the powerful tech giant behind the experiment. But then… the daily calls stop. Five days pass.
No messages. No answers.

When the biosphere leaders finally step outside, they discover a truth more chilling than isolation: Earth is silent. Empty. CI is gone. The world is abandoned.

What happened to the rest of humanity? Who—or what—is watching them now?

As a small team ventures into the unknown to uncover the truth, they stumble upon a signal. A hidden lab. And evidence of something non-human. Something that survived. And it’s not alone.