Paris, France. Fred and his colleagues, members of the BPM, the Police Child Protection Unit, dedicated to pursuing all sorts of offenses committed against the weakest, must endure the scrutiny of Melissa, a photographer commissioned to graphically document the daily routine of the team.

A family of Brussels concierges, whose employers have left for the summer, decide to swap their home for a magnificent villa in the south of France for the holidays. However, upon arriving on the island, they discover that all the surrounding beaches are exclusively for naturists.

Loudun, October 1947. Leon Besnard and Marie celebrate their eighteenth wedding anniversary with friends and Ady, a former German prisoner they have "adopted". A few days later, Leon dies. Louise, a friend of the couple's and probably Leon's mistress claims that, on his deathbed, the deceased told her that Marie was poisoning him. The whole town soon condemns Marie and she is arrested and sent to jail. Did she really kill Léon as well as twelve other members of her family as she finds herself charged with?