The body of 19 year old footballer from Heiderfeld Football Club is pulled out of the river Semois, a short distance from Heiderfeld, a small town of a few thousand inhabitants in the Belgian Ardennes. The investigation is led by Inspector Yoann Peeters, who has recently moved there after a domestic tragedy, accompanied by Sebastian Drummer, an idealistic and inexperienced young police officer. Peeters will find himself confronted with a real conundrum, where one person's guilt does not mean that others are not responsible.
At the start of 1960. French secret services hired young André Merleaux, back from Algeria. André trains with real spy more interested by their expense reports than by their work. The road is long to become an agent like 007.