Grief can do strange things. When Juliana looses her parents, she drops everything and rushes back to the family's holiday-home in the south of France. Unbeknownst to her and her husband, Juliana's estranged brother Joesph does exactly same. Set against rolling valleys and medieval architecture in Lot et Garonne, Steamboat follows two days in the life of a family who have been separated for many years. Death - it turns out - has visited the holiday home once before.