One night in Beirut in September 1982, while Israeli soldiers secured the area, Christian militia members entered the refugee camps of Sabra and Shatila and began to massacre hundreds, if not thousands, of Palestinians. Ari Folman was one of those Israeli soldiers, but for more than twenty years he remembered nothing of that night or of the weeks leading up to it. Then came a friend’s disturbing dream, and with it Folman’s need to excavate the truth of the war in Lebanon and answer the crucial question: what was he doing during the hours of slaughter?

Challenging the collective amnesia of friends and fellow soldiers, Folman painfully, candidly pieces together the war and his place in it. Gradually, the blankness of his mind is filled in by scenes of combat and patrol, misery and carnage, as well as dreams and hallucinations. Soldiers are haunted by inexplicable nightmares and flashbacks—snapping, growling dogs with teeth bared and eyes glowing orange; a recurring image of three young men rising naked out of the sea to drift into the Beirut battlefield. Tanks crush cars and buildings with lethal indifference; snipers pick off men on donkeys, men in cars, men drinking coffee; a soldier waltzes through a storm of bullets; rock songs fill the air, and then yellow flares. The recollections accumulate until Ari Folman arrives at Sabra and Shatila and his investigation reaches its terrible end.