After the passing of Ms. Saadet, the last owner of The Century-old Mansion, her inheritance was legally left to long-distance relatives she did not know. Upon this, Tekin, whose childhood was spent in this mansion, fights to take it back even though he does not have a right to inheritance. With the guidance of Lawyer Fikri, Murat who is in debt, Harun who lost everything he owned, and Emin who was defrauded come together with Gönül, Ms. Saadet's nurse, in this mansion. These people who were left homeless learn to be a family and support each other in time, despite the difficulties they initially encounter.