Lin Zhao woke up after her memory was cleared, and the world deleted her favorite person - Shen Huai. Files disappear, surveillance is traceless, and even photos automatically turn yellow. But she dreams of a blue iris every night, which leaves an indelible pain in her mind. When the psychologist Su Ling handed over the repair plan, the black marketeer Zhou Yu secretly stuffed her with a bloody nerve chain, and the AI nurse Yun Zhi whispered in her dream: 'He is still waiting for you to remember. ' Ji Wu, a rookie in the parliament, is preparing to initiate the final purge. Lin Zhao must uncover the locked truth before her memory is completely overwritten - even if the lover she finds is no longer who she thought she was.
In order to retrieve Shen Huai, Lin Zhao stepped into the dark network of the Memory Federation step by step, relying on AI cloud knowledge to analyze incomplete data, black marketeer Zhou Yu to provide key memory fragments, and psychologist Su Ling to provide cover. As she gradually recovers her past with Shen Huai - a covered-up experiment in consciousness symbiosis, a betrayal in which she voluntarily accepted memory stripping to save her - she discovers that Shen Huai is not a victim, but the leader of the plan, just to let her survive in oblivion. Su Ling secretly activated the self-destruction program in order to blow up the memory center, at the cost of eternal silence in the consciousness of all those eliminated, including Lin Zhao. Ji Wu presented the marriage contract records of the two at the final hearing, revealing that he was the culprit who ordered the elimination that year. Lin Zhao must choose between saving Shen Huai, destroying the system, and fulfilling Su Ling. She chose to upload her memories to Yunzhi, making Shen Huai the first 'memory night watchman' in the new world, and she herself restarted as an ordinary person and no longer remembered who she loved. But in the last frame, an iris petal quietly blooms in the newborn baby's swaddling clothes.
