The Gulsoys, one of the prominent families of Cappadocia, come together upon the return of their eldest son Ates from America. With his brother's definite return, Yaman decides to make a surprise proposal to his childhood sweetheart Feraye on her birthday. However, the disaster that happens that night with his younger brother Okan will change all the balances and turn everyone's lives upside down. This is, Safir (Sapphire).