The story of a young woman named Anna Jurin set in 1958, in the French Alp. She has a trip to Saint Ange Orphanage to help Helena meanwhile the children is adopted by new families. Anna keeps her own secret; out of the blue, she comes across the last child who is considered as a metal patient when she can hear a myriad of voice from the invisible children. Anna and Judith investigate to disclose the secret about the mysterious children.