Gates to Paradise is a 1968 film by Polish director Andrzej Wajda. The film is set in medieval France and is based on a story by Polish writer Jerzy Andrzejewski 1960 that seeks to expose the motives behind youthful religious zeal. It was entered into the 18th Berlin International Film Festival.
Both Alexander Mathieu Carrire and Bianca Pauline Challoner are in love with Jakob. Alexander, who has learned that his adoptive father and his lover, Count Ludwig Ferdy Mayne, also a crusader, had killed Alexanders Greek parents, is gleeful that Jakob himself is in love with the Count, whom he had met after the Count and Alexander had split after an argument. This allows Alexander to take revenge for the Counts infidelity by telling his beloved Jakob about the Counts recent demise by drowning in a river, watched by an unmoved Alexander.Finally, it is revealed in Jakobs confession that Jakob received the inspiration for the crusade not from God but from the Count, which means that the crusade must fail, since it is not by the will of God. However, the monk is unable to stop the childrens progression and is left behind. ........
Source: Wikipedia