The third in a series of films featuring François Truffaut's alter-ego, Antoine Doinel, the story resumes with Antoine being discharged from military service. His sweetheart Christine's father lands Antoine a job as a security guard, which he promptly loses. Stumbling into a position assisting a private detective, Antoine falls for his employers' seductive wife, Fabienne, and finds that he must choose between the older woman and Christine.

A bored young man meets with his former girlfriend, now a cabaret dancer and single mother, and soon finds himself falling back in love with her.

Charlie is a former classical pianist who has changed his name and now plays jazz in a grimy Paris bar. When Charlie's brothers, Richard and Chico, surface and ask for Charlie's help while on the run from gangsters they have scammed, he aids their escape. Soon Charlie and Lena, a waitress at the same bar, face trouble when the gangsters arrive, looking for his brothers.

Standing Army, directed by Enrico Parenti and Thomas Fazi, is an award-winning documentary film about the global network of U.S. military bases, the impact that these have on local populations, and the military-industrial complex that lies behind it.