1945: While liberating a concentration camp, an American medical unit uncovers something beneath a body-filled trench. Sixty years later, the survivors of that unit are systematically murdered because of what they saw. The present. Enter former Palestinian-American detective Ben Kamal and his Israeli counterpart Danielle Barnea. Working for the United Nations now Ben and Danielle return to the Middle East to investigate a massacre in a Palestinian village. They quickly uncover the fact that the roots of that massaore lie elsewhere, in another era on another continent ...