Last night, a woman was pulled out from the Seine River by the river police. Her naked body was partly covered with tattoos and she had a memory loss, yet she was still alive. From the Seine River, she was taken to the police headquarters' infirmary in Paris, and from there, she went missing without a trace. Up to this point, the story seems normal. However, when genetic analysis and images reveal the woman's identity, and it turns out that she is Melina Bergman, the matter becomes even more complicated, for the famous pianist had died in a plane crash a year ago. , , Rafael, her ex-fiance, and Roxane, a policewoman who had just been temporarily laid off from work, suddenly find themselves in the heart of this case: how can the young woman be dead a year ago and alive today? What is the story behind the tattoo? How will this adventure lead them to the city's hidden worlds, the rituals of its secret groups, and its insane myths?