A high school student in detention is not necessarily resentful or bitter. At least not the one the film revolves around. He looks rather lost in happy memories. For the price of his punishment is low compared to the wonderful four days he spent in his town of Tours. Fed up with the monotony of school life, the teenager had decided to know more about an event taking place in his hometown: the Short Film Festival. One morning, leaving the school he starts wandering through the streets, not knowing how to be part of the festival. But a miracle happens : he meets by chance Betsy Blair, the American actress. Touched by the young guy's wish to learn about short films and to rub elbows with celebrities, she arranges to get him into the Sanctum Sanctorum...