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.
In Paris around 1900, a young man raised by his wealthy uncle plots revenge after his cousin is betrothed to a rich neighbor. He steals the fiancé's family jewels, reveling in the thrill, and sets off on a lifelong path of burglary.
During France’s Hundred Years’ War, a Parisian student seeks refuge by the sea and falls in love with an aristocrat. As they find shelter in a monastery, their romance is overshadowed by the ongoing conflict between peasants and noblemen.
