The body of a woman in her fifties is found in the forest. She was strangled. At the autopsy, Alex discovers a musculature incompatible with the age of the victim. Through the study of this woman's body, she will immerse herself in a puzzle as only she can decipher: multiple and old fractures, rough scars, athlete's musculature: this body tells an unusual story that Alex will have to reconstruct by going back to the mysteries of an extraordinary childhood.