One evening in Pigalle bar, Philippe, a singer-songwriter, attends the strip-tease act of a certain Sacha. Fascinated by the young woman, who also performs in a peep show across the street, he has only one idea in mind, seducing her. The young man is neither a flirt nor a pervert but Sacha has an irresistible attraction for him. He starts to follow her, finds out where she lives but things remain as they are. Both finally meet: he discovers under Sacha's pseudonym an endearing young Marie with the temperament of an artist. As for Marie, she realizes that this apparently dubious boy is a tender shy person as well as a true romantic.