Monsieur Pamplemousse is beginning to display the consequences of his single-minded pursuit of excellence in haute cuisine in his capacity of undercover agent for the prestigious 'Le Guide' The director sends him and Pommes Frites, his bloodhound right paw-to a health farm in the Pyrenees in the guise of a blind man and his guide dog It is not long before the retired detective stumbles on dirty work at the Chateau Morge sausages