After the funeral on a blustery October day, the family attorney instructs three siblings to meet at their grandfather's lake house in eastern Maine. Assuming they were to gather for a reading of the will, they reluctantly agreed, carrying with them resentments, pain from the past, and a deep bond. After finding a box smuggled out of Nazi Germany in their basement, however, the grandchildren realize there is a darker secret from their grandfather's grave that leaves them questioning his character and their own personal failures.