An eleven year old boy is in love with a sixteen year-old girl. To get her attention, he makes her believe that he is reincarnated, using the memories of Rose, his great-aunt, who has been living in seclusion since the end of World War II.

Summer 1978. Basile is 11 years old and he is in love (as one can be at that age) with Cécile, a pretty 16-year-old girl. To attract his attention, Basil will make her believe that he has reincarnated. For this, he uses the memories of Rose, a wounded prima ballerina who has lived cloistered since the end of the Second World War on the first floor of Basile's grandparents' house.