Lin Zhou, a top memory weaver, was hunted after losing his memory. In order to find the truth, he cooperated with the black market leader Silas and sneaked into the Sea of Memory to steal intelligence.
In mission after mission, Lin Zhou discovered that the truth about his amnesia was related to the "Memory Plague" plan of the Eternal Parliament. The plan aims to erase the memory of the entire population and establish absolute rule. At the same time, he and Silas broke up due to ideological differences.
Lin Zhou learned that his amnesia was to absorb and protect the city's "original backup memory" to fight the plague. At the last moment when the council leader Kyle launched the plague, Lin Zhou joined forces with his former rival Silas and entered his own spiritual sea to have the ultimate showdown with the inner demons and Kyle who represented the plague.
Lin Zhou successfully defeated Kyle and broadcast the original memory to the whole city, saving the world. But much of his personal memory has been permanently overwritten. In the end, after his beloved Evelin regained consciousness, he started over with her as a "stranger". At the same time, he discovered that the memory of the city in his mind also hid a greater secret about the origin of the world.