CYCLUS

Adapt. Die... Or break the cycle.
Carajás, Brazil: A shimmering cloud forms over a remote rainforest mine. An exploration team vanishes inside. Locals whisper about figures moving beneath the haze-inside a shadowland called the Umbra.
When the phenomenon is traced to land she inherited from her late uncle, cave diver Stacy Nakano is pulled back into the mining empire she tried to escape. What she finds is worse than a disaster-the Umbra is not just a virus, it's selective. Adaptive. Alive.
As the cloud expands and global outbreak looms, survival depends on blood type. Classification becomes judgment. Those desperate for immunity must choose whether to alter their own biology to fight back.
With the help of Preston Barrows, a brilliant cellular engineer who created the survival serum, Stacy enters the Umbra determined to destroy it. But inside, time fractures. Reality bends. And the deeper she goes, the more she begins to understand: The Umbra is not an invasion. It's a reset. An evolutionary cycle humanity has faced before-and failed to understand.
As the military prepares to erase the threat with force, Stacy faces an impossible choice: End the cycle... or become the reason it begins again.