Freelance photographer Shen Zhao found a thorn pocket watch stuck at 9:47 in a London antique store, but it triggered a time and space curse that spans a century. The mysterious shop owner Gu Qingya is an eternal being imprisoned by time. The bleeding thorn tattoo on his wrist is engraved with the countdown to death of seven moon phases.
When Shen Zhao discovered that the car accident three years ago was actually the beginning of memory tampering, and the déjà vu such as the 1912 shipwreck and the 1940 air raid that appeared every rainy night were all cloning experiments of the Time Administration's "Project Theseus". In order to crack the quantum cocoon in the giant bronze coffin, she must travel through seven levels of time and space to retrieve the dismembered memories: the Edwardian suicide note, the kiss marks in the World War II air-raid shelter, the skeletons hugging each other in the ice sea sunken ship...
In this game with time stowaways, the most dangerous bet is Gu Qingya, who has malachite embedded in his heart. He repeated at the end of each reincarnation: "When you count the ninth moon phase, you will understand that we have already died in the bronze pocket watch we first met."