Antoine Doinel has married Christine Darbon. He's working for a florist tinting flowers in the courtyard of the building where they live. Their neighbours are an eccentric bunch including an opera singer and his wife, a man in voluntary confinement, a waitress in love, and a mysterious man nicknamed "the strangler". Antoine begins working for an American company and shortly afterwards finds that Christine is to have a baby. But here Antoine and Christine's happiness ceases as Antoine become obsessed with Kyoko a beautiful, exciting Japanese girl he meets at work and becomes more and more distant from Christine.