The Ancients recount the arrival of the ekomers on Earth as the greatest cataclysm in history. Terraformed, the fauna and flora then change forever. Thus, each plant responds to the call of these invaders and gangs up against the surviving humans who, in order to continue to exist, have found refuge in a crater in the heart of the African continent, under a protective dome.

Thiziri, called Blanche by her family because of her albinism, is the best of the Reapers. His role: to feed his family through hunting. Only, prey is becoming scarce.

Pushed ever further, she can only question the knowledge of the Ancients when she finds herself facing this ocean which, geographically, should however be hundreds and hundreds of kilometers away.

And what about this red moon that appears in the sky? Who in his world is ultimately the predator?