It's been ten years since René and François' ways were separated. From the glorious past, which was all investigating on and around Montmartre, as cops, only thing left is a bunch of souvenirs. Everything seems to have an end...until it all begins again! René, who's close to becoming a tramp, lives in an old boat. By an act of destiny, François and Renlé are re-united, except that this time, they're not side by side, but more like one against the other!