Middle-aged sisters Taina and Pirkko are renowned for their traditional Finnish farmhouse ale, known as “sahti.” Their third sister, Päivi, is preparing for her wedding and requests her sisters to craft 100 liters of this special brew for the celebration. However, the irresistible quality of their sahti proves too much to resist, and the sisters end up drinking it all. The next morning, they wake up with terrible hangovers and realize they've consumed the entire batch. Now, they have just 24 hours to produce another 100 liters of high-quality sahti, or risk losing their family’s respect and reputation.