Late at night, Lin Yan, the city bureau's forensic doctor, dissected an unknown female corpse with a scratched face and removed a copper button from the deceased's stomach. Engraved on the button were two small characters that made her shiver - "Lin Yu". That was the name of her brother who disappeared twelve years ago.
Before she could digest it, a text message appeared like a ghost: "Remember?" Immediately afterwards, a strange man broke into the forensic center and threatened her to hand over the button, otherwise her best friend Tang Yu would be next.
Lin Yan was forced to join forces with criminal police captain Zhou Ye to investigate. They soon discover that the dead are not the only ones. Every dead person found corresponds to an "erased person" from Lin Yan's childhood memory. What really frightens her is that she herself is one of them - No. 07.
Blue house. Psychological experiment. Tampered memories. The stolen brother.
As the truth was revealed, Lin Yan discovered that the man she had called "father" for twenty years was not her biological father, but her uncle. The real mother and brother are still trapped in a dark underground place. And the knife she was forced to pick up when she was five years old has never really been put down.
Zhou Ye said: "People are not determined by blood, but by choice."
Lin Yan decided not to escape. She wants to return to the blue house, open the door locked by fear, and find all the people whose names have been stolen one by one.
From number 07, to Lin Yan.
From experimental subjects to humans.