The lighthouse experiment is actually an experimental plan for virtual life.

In order to raise the 100,000 surgical fee for her grandmother's hospitalization, Jiang Xiaoyuan, a college student from a poor family, agreed to participate in the lighthouse experiment as a guinea pig.However, the experiment failed, and Jiang Xiaoyuan's memory was confused, causing him to stay in the fictional memory of 2025, while all his real memories were forgotten.

The laboratory was afraid of causing death, so Jiang Xiaoyuan deliberately thought that she had been in a car accident and traveled into the body of Jiang Xiaoyuan who had the same name in 2018. The same experience was also experienced by Qilian's good friend Xu Jingyang. In 2012, he also heard about this experiment and asked him to recover.He pinned his hopes on this lighthouse experiment and told Qilian not to be sad if he disappeared one day.

Then he disappeared on the rooftop of the hospital.Qi Lian has been searching for Xu Jingyang's whereabouts and Jiang Xiaoyuan's current situation these years.Later, Qi Lian accompanied Jiang Xiaoyuan to find a way to return to 2025, and finally discovered the content behind the entire incident. There was no parallel world, no time travel, and no substitute. Jiang Xiaoyuan was the same Jiang Xiaoyuan from beginning to end. Qi Lian decidedAfter uncovering the black-hearted laboratory behind the scenes, they also successfully found the whereabouts of Xu Jingyang, who also suffered from the same sequelae as Jiang Xiaoyuan and lost his original memory.