Amsterdam, 1892. Lydia mourns the death of her parents, who have passed away one after the other. She has inherited the family home in the city and the country house in Purmerend. Despite the sad loss, she is full of ideas for the future and wants to realize her father's plans: to build a modern cheese factory, with steam engines and high production. However, as a woman, she is not allowed to start a business, so she has to work alongside Huib Minnes, an innovative farmer from the region. Together they manage to build the largest cheese factory in the North of Holland. Years later, at the dawn of World War I, past decisions test Lydia's bravery and courage.