The story of a child's vacation on the shores of Lake Annecy, in the house of a family friend, an admiral and composer haunted by the memory of a prestigious anscestor. Between the young guest and the musician officer, an unexpected relationship arises among the objects of the past, like an invisible legacy.
For the boy fascinated by the stained glass window that transfigures the mountains, this summer marks the epiphany of childhood that precedes the melancholy of its passing.