The colonel Hubert Saint-Pierre has seen a periscope in the waters of the Seine river in Paris.For the ministry of the Navy it's very delicate,nobody can know that there a submarine in the Seine River.Maybe the colonel is a little tired and needs to rest for some days.So the colonel is sent to an asylum.Imogène Le Dantec is in Paris in a special mission under the cover of "Plouguirec Travel" , a travel agency.One night after a fight in bar Imogène is sent to a police station: then comes the director who sends Imogène to the same asylum where the colonel is for his rest : her mission is to watch over the colonel.
—zutterjp48