Fiercely independent, Nora Becker has been travelling the world for 20 years to practice her profession as a forensic anthropologist. On the death of her best friend, she returns to Chambery, the city where she grew up, and discovers with surprise that she was designated as a guardian for Sam, 12, the daughter of the deceased. Led to curb his insatiable need to travel, Nora meets Commander Gil Spinelli and finds herself involved in complex investigations.