Guy and Mave decide to show off their renovated boat and all its historic inventions at an end of mission party. They make some party food, learning how to bake a Victoria Sponge, and also commemorate their trip by mastering a 150-year-old camera and trying to sit still for two minutes for a Victorian-style portrait. They face the harshest conditions ever on the water and steer their narrowboat Reckless through inch-thick ice as they battle a cold snap.