Darius, lively, passionate, a bit of a schemer, is the boss of the "Invisibles," a marginal brigade that handles investigations into victims with no identity, no history, no past... His obsession? To restore their dignity, their humanity so that their families can grieve. His team? Marijo, a cheeky, big-hearted woman with a cigarette in her mouth, always complaining; Ben, a former boxing champion, a big teddy bear with sensitive fists; Duchesse, a 25-year-old petite bourgeois, brilliant but unaccustomed to the field, and Angie, who reconstructs the bodies with a mischievous pep. Their mission? To identify the victims before they end up in a mass grave and, above all, to arrest the murderers before they get away with it. A 75-year-old man dead in the middle of a rave party, bodies found in abandoned houses, victims with no identity left in front of a hospital... they are now mandated to reconstruct a life, a destiny, and deliver justice.