Two young students in Paris, Bertrand who is timid, young, and in pharmacy school and his brash friend Guillaume, who is something of a womanizer, encounter the independent and articulate Suzanne in a café. Guillaume flirts with her using his wit and charm to seduce her. She quickly succumbs to Guillaume's coarse advances but after bedding her he is rapidly bored with her, however, continues to lead her on despite his complaining and flirting with other women.