Pot de terre contre pot de fer

Joseph, le fils adoptif de Munch, est arrêté et placé en garde à vue. Il est suspecté du meurtre de Maître Arnaud Carlier, avocat du laboratoire pharmaceutique contre lequel Bellanger et lui se battaient. Convaincue de son innocence, Munch va se livrer aux combines les plus tordues pour le faire libérer. Mais en creusant le dossier, Munch et Bellanger se heurtent au puissant laboratoire américain, qui entend défendre ses intérêts.

Munch's adopted son, Joseph, was arrested and taken into custody. He is suspected of the murder of Arnaud Carlier, lawyer of the pharmaceutical laboratory against which he and Bellanger were fighting. Convinced of his innocence, Munch will engage in the most twisted schemes to free him. But in digging into the file, Munch and Bellanger come up against the powerful American laboratory, which intends to defend its interests.