On September 23, 1971, Gilles Leblanc, 10, was kidnapped. A ransom of $3,000 is demanded. However, it will never be recovered.

Stéphanie de Sève tracks down Jean-Guy Pelland, the man who said he kidnapped Gilles Leblanc along with his father, Germain de Sève.

Stéphanie de Sève revisits the investigation and explores the hypotheses and rumours that were circulating at the time.

In her investigation, Stéphanie de Sève receives disturbing revelations about her father. She has to discuss this delicate subject with him.