When Li Sui woke up, she found that her childhood memories were being slowly sucked away by the stardust, while her most trusted mentor, Ji Jin, stood outside the recovery cabin and watched indifferently. When the underground memory dealer Su Tang handed over her tampered childhood video, and when the mute girl Xiaoyu drew her never-spoken nightmare on the wall, she realized that Stardust was not an alien life, but an aggregation of resentment collectively forgotten by mankind. And she is the only one who remembers 'who we were'.