In 2019, seventy-year-old Signe sets out on a hazardous voyage to cross an entire ocean in only a sailboat. She is haunted by the loss of the love of her life, and is driven by a singular and all-consuming mission to make it back to him. In 2041, David flees with his young daughter, Lou, from a war-torn Southern Europe plagued by drought. They have been separated from their rest of their family and are on a desperate search to reunite with them once again, when they find Signe's abandoned sailboat in a parched French garden, miles away from the nearest shore.