The year is 1920, the place is Istanbul. The capital of the Ottoman Empire, which was defeated in World War I, is occupied by the Allies. Anatolia needs an information flow from Istanbul, and Istanbul's elites live a 'sweet' life independent of the subject. Founded under the leadership of Sait Molla, the Society of British Enthusiasts fuses the English and Istanbul community life. At this point, Deli Saraylı and Hüsrev Major are given a task. This team will provide intelligence by keeping a mansion in Istanbul. The team that enters the society they are strangers to is established as a whole family, all family members work for intelligence. However, in this environment where they are strangers, everyone breaks a lot of pots... With the themes of love relationships, hatred, humor and patriotism, Deli Saraylı will set the throne in your heart.