When Wen Qing woke up, she found herself lying in a completely unfamiliar white room. The face in the mirror is hers, but the smile in the mirror is not hers.
What's even weirder is that this is the 999th time she has woken up in the same room.
Each time, she would die within seven days, and then everything would reset to zero and start over. She tried calling the police, running away, and even committing suicide, but fate, like an invisible hand, held her tightly in this strange town called "Mirror City". In the 997th reincarnation, she found a diary with her handwriting, but the content said: "Don't trust anyone, including yourself."
For the 998th time, she killed herself with her own hands - the exact same "her" who walked out of the mirror.
And now, for the 999th time, there is a new line in the diary: "This time, you will know the truth. But the truth will make you rather never wake up."
Wen Qing finally understood: she was not looking for the murderer - she was looking for who she really was.
A suspenseful mystery about identity, memory and existence itself is slowly revealed in the last round of reincarnation.