In Çorum, Sadık and his family continue the tradition of making yoghurt for thousands of years. The secret of the legendary yoghurt is protected by Dede. However, snowfall on a summer day triggers the legend that this secret must be passed on. The family must come together to avoid disaster. Twin brother Özgür, who lives in Istanbul and is estranged from his family, also joins this struggle. The twins embark on a challenging journey to learn a thousand-year-old secret.