Blue Box is a brave account of how the Jewish National Fund acquired land in Palestine before and after the creation of the State of Israel. Film-maker Michal Weits' great-grandfather Joseph was a key figure in the organisation. In her family, and across Israel, he is celebrated as the father of the country’s forests, taking ‘a land without a people for a people without a land', but when Michal finds his private diaries, she discovers a very different story. In conversations with her family, she questions her great-grandfather's actions, resulting in an exploration of Israel's past and an uncomfortable truth.