Sandra Winckler's investigating a wave of murders linked to retired police legend Paul Maisonneuve. Bodies dug up and left in model homes in the same ritual: an unrelated woman, a man and teenager who form a new family amid a photo of Paul.

Paul Maisonneuve and Sandra Winckler, two chalk-and-cheese cops, are faced with the show-home case. Paul is a mysterious man. What is he hiding? Who from his past could be guilty, wanted by every police officer in northern France?

Sandra Winckler and Paul Maisonneuve have proof: Kaz Gorbier is alive. Paul's sworn enemy is probably the one digging up the bodies. As they hunt Kaz and his accomplices, they discover another set-up: more bodies in a new show-home.

Kaz Gorbier steps into action and reveals himself: he kidnaps his own family and lures Paul Maisonneuve into a trap. Will Sandra Winckler be able to foil his schemes and solve the numerous mysteries building up around the show-home case?

Paul Maisonneuve's in the hands of Kaz Gorbier. Sandra Winckler's now alone on the case. She knows Kaz can't be acting alone so who's digging up the bodies, where lies the truth and more importantly how can she save Paul from certain death?

Rescued by Sandra, Paul discovers the truth: the person digging up the bodies is hiding their troubled past which has resurfaced. Paul and Sandra will have to stretch their very own limits to finally get to the bottom of the show-home case.