Sevgili Geçmiş tells the story of Ipek, who is finalising her wedding plans when she is stunned to receive an anonymous letter telling her she has two sisters she never knew. The three agree to meet at the wedding. But as Ipek’s new husband Tekin angrily loses control after the party, they strike a fatal blow to his head in a desperate scuffle. Suddenly, in the course of a couple of days, these three go from not knowing of each other’s existence, to being at the centre of a murder cover-up together. And their newly-formed sisterly bond is immediately put to the test.