A man struggles to come to terms with a mystery that has haunted him throughout his adult life in this drama from Poland. In 1967, a 13-year-old boy named Dawid discovered a cache of explosives and began experimenting with them; one day, several of his friends saw Dawid wave to them shortly before a massive explosion went off near a railway tunnel, and no one ever saw the young man again. Thirty years later, one of Dawid's close friends, Pawel (Marek Kondrat), returns to Poland for the first time in 11 years to visit Juliane (Juliane Kohler), a woman he used to love. As Pawel returns home, he discovers his thoughts keeps drifting back to Dawid and what might have happened to him that day. Pawel keeps replaying the explosive incident in his mind, and goes so far as to track down Elka (Krystyna Janda), Dawid's girlfriend, who was with him moments before the explosion, though then as now she refuses to talk about what happened. Pawel is unable to determine for sure just what happened or how Dawid died -- or if he did in fact die at all. Weiser was nominated for the Golden Bear award at the 2001 Berlin Film Festival.