The third in the Antoine Doinel series, (first told in the film The 400 blows) and in many respects the autobiography of François Truffaut. After his dishonorable discharge from the army, Antoine embarks on a series of ill-fated jobs, finally settling on an amusing stint as a private dectective. In his ever-turbulent love life, he finds himself torn between an attractive, serious-minded young violinist and a glamorous, older married woman.