After years of fleeing and fighting, the surviving earthlings prepare to live happily ever after on the water exoplanet OURÉA.
In the middle of the ocean, in a protected dome at the AÏQUA base, Nossis and Janus, Ajay and Dali in love, enjoy the beauty of the hanging gardens. This joy is interrupted by orders from A.I Mahapoer.
An unknown phenomenon threatens OURÉA, and it becomes imperative to stem the oxygen losses the planet is suffering. These losses threaten the survival of the OURÉANS. Neither A.I Mahapoer nor A.I Quintessence have been able to find out why. Fearing terrorist sabotage, they discreetly requisition a hand-picked group of OURÉANS and Earthlings to find the flaw, the cause of this calamity. If they are to survive, they must put an end to it. Nossis is one of the chosen few.Few to have survived the last genocide, too precious, the children wishing to collaborate are put aside.
The group thus formed is attacked by what appears to be a "nano-nuke", a dysfunctional "nanotech". It turns out that this "nano-cloud" locks them into a world from which they can neither communicate with the outside world, nor escape. They are prisoners.
Nossis' strange powers drive her to interact. She, who can communicate with machines, read them and influence them, is charged to contact all organizations likely to find solutions:
The Sea-Ladies, the children's AI called FUTA, all of them want to live and collaborate. In a chaotic journey, they will all fight for their lives.