In the year 20XX, human beings gain "immortality" by having their bodies transformed into cyborgs and only their brains remain alive. Humans are free to use the cyber world and live happily under the democratic rule of the DAO.

However, the highly functional AI "CryptoNet" becomes self-aware, and the program performs the 51% attack on the dennoh mainnet. All DAO resolutions are monopolized by the AI, and the minds of the people in the cyber world begin to be contaminated. 
Eventually, humanity loses its self-consciousness of being in the cyber world, and the brains of people connected to the cyber world become bio-power generators to run machines.
In the midst of all this, only the eccentric Dr. NeoCorner, who refused to be connected to the cyber world until the very end, lived peacefully in the analog world. 

One day, NeoCorner receives an SOS message from his daughter before she was mentally contaminated. The daughter was the leader of the human cyborgization project.

The encrypted message explains that

1) AI is about to take over the cyber world, and
2) there are 10,000 combat maid cyborgs "CryptoMaids" hidden in the basement of her house.

Will NeoCorner and the CryptoMaids be able to win the battle against CryptoNet and free their daughter and the cyber world?