In the future city "Etel", the memories of citizens will be cleared in each cycle of "baptism" in exchange for absolute social stability. Data proofreader Zero is an anomaly - he can remember everything. When a silver pendant appears that shouldn't exist, Zero's peaceful life is completely shattered. The appearance of memory guardian Guan Xi is both surveillance and testing. In order to find the vague smile in the pendant, Zero entered a maze of lies and forgetfulness. What he will face is not only the dark core of the city, but also the cruel truth about self, love and freedom buried deep under the sea of oblivion.
