Driven by a quest for the truth, historian Yoel is sustained by his faith and work, toiling in the basement of the Holocaust Institute in Jerusalem. Investigating the cover-up of a wartime massacre of Jews on the outskirts of an Austrian village, he stumbles upon classified evidence that suggests his mother is not the woman she claims to be, a thunderbolt that undermines everything that defines him. With his personal and professional life at stake, Yoel secretly pursues the lead, risking everything—career, wife and son, even his own beliefs—to solve the historical mystery about his identify.