In the future world, humans have invented "memory purification" technology, which can accurately delete all negative memories such as pain and sadness. A utopia of eternal "harmony" and "pleasure" was born.
However, the ruling agency "Memory Review Bureau" discovered that those who chose to retain painful memories burst out with amazing creativity and resistance. In order to maintain absolute stability, the Censorship Bureau began to forcibly erase the painful memories of all citizens.
Ahment is the last "Memory Guardian" in the Memory Review Bureau, and his duty is to guard the cold warehouse that seals all forbidden memories of mankind. When he received instructions to conduct the final "purification" of himself, an eccentric memory experience was like a key, prying open his tampered past.
He discovered the truth that his memory had been erased, and also glimpsed the cruel nature of this society that systematically castrates the depth of the soul and stifles the fire of thought.
At the moment before his identity was revealed, he made the most dangerous "backup" in his life - transmitting a batch of taboo memories carrying the true pain and power of mankind to an unknown distance.
Now, he is a "purified" and happy empty shell, living in a perfect cage. But deep in his consciousness, a "ghost partition" made of pain is awakening. Those memories that have been clearly marked with a price and tried to be erased are becoming him, and even the entire human civilization, to fight against absolute nothingness...
