Two in the Wave is the story of a friendship. Jean-Luc Godard was born in 1930; Francois Truffaut two years later. Love of movies brings them together. They write in the same magazines, Cahiers du Cinema and Arts. When the younger of the two becomes a filmmaker with "The 400 Blows", which triumphs in Cannes in 1959, he helps his older friend shift to directing, offering him a screenplay which already has a title, A bout de souffle, or Breathless. Through the 1960s the two loyally support each other. History and politics separate them in 1968, when Godard plunges into radical politics but Truffaut continues his career as before. Between the two of them, the actor Jean-Pierre Leaud is torn like a child caught between two separated and warring parents. Their friendship and their break-up embody the story of French cinema.

As every year, chief inspector Paul Bellamy spends a few days with his wife Françoise in the family house in Nîmes. Jacques, Paul's stepbrother, turns up unawares, which is bad news since the fellow is an alcoholic good for nothing. Also annoying is this stranger at bay who asks Bellamy for protection. Farewell peaceful holiday!

Connie Sumner has a loving husband, a beautiful home, and a wonderful son, but she wants more. When she's approached one day by a handsome stranger while trying to hail a taxi, she becomes obsessed with him and eventually starts an affair. But her selfish actions soon catch up with her...