Programmer Lu Ming is a socially anxious otaku who is addicted to coding. He found an antique camera from the Republic of China at a flea market. The lens was rusty, but the three small characters "Lin Wantang" were engraved on it. While working overtime late at night, he casually clicked the shutter on the empty living room. The flash suddenly turned on, and the woman wrapped in a dark red cheongsam actually fell out of the photo paper - her bun was messy, her neck was bloody, and a cold dagger was pressed against his throat: "Master Qin Jiu, the reincarnation of you beast is really fast!"
The concubine of the Republic of China, who called herself Lin Wantang, believed that Lu Ming was the reincarnation of Qin Jiuye, the warlord who massacred her entire family a hundred years ago. She has been trapped in the camera for a hundred years, and her resentment cannot be eliminated. Now only Lu Ming can see her, and her soul will be torn apart once she is more than a hundred meters away from him. The two were forced to start an absurd daily life of living together: Lu Ming stayed up late writing code, and Lin Wantang floated on the chandelier and sneered; Lu Ming ordered takeout and ate instant noodles, and she overturned the bowls and chopsticks and scolded him for being "short-lived"; until one day, Lu Ming caught a glimpse of the real truth in the remaining images of the camera——
In the autumn of 1925, the Lin family, the richest man in Jiangcheng, was exterminated because the warlord Qin Jiuye forcibly married Lin Wantang, the youngest daughter of the Lin family, as his concubine. However, he was rejected and slaughtered to vent his anger. Lin Wantang was shot three times and fell into a well. Before his death, he clutched a pocket watch engraved with the word "Qin". In modern times, Lu Ming's great-grandfather was the accountant of a branch of the Qin family, and the camera was a relic he used to hide evidence of his crimes.