This is a fictional interpretation of an actual crime that sees newly promoted "Vivés" (Bastien Bouillon) take his team of Grenoble detectives to a small town to investigate a grisly murder. Walking home from a friend's house the previous morning, "Clara" (Lula Cotton-Frapier) is confronted by a stranger who throws a combustible liquid over her and then sets her alight. What the Police Justiciare have to work with is a ghastly sight. Their investigations quickly reveal no shortage of potential attackers. This girl had lived a "lively" life - unbeknownst to her parents - and her boyfriends rang...