One day in the future, an alien civilization arrives.
The aliens have evolved a technological civilization far beyond humanity's. They have abandoned their bodies, retaining only their consciousness, with their bodies transformed into energy.
To resist the aliens, humanity has no choice but to abandon all high-tech devices: phones, computers, televisions, radios... The aliens can control them all and turn them into terrifying weapons.
The surviving humans gather in the great nature reserves, struggling to survive. In reality, they have been kept like animals, just as humans once established wildlife reserves.
It is under these circumstances that the male protagonist transmigrates here.
