What will happen in Güzel Aşklar Diyarı Season 1 Episode 1?

Deniz, a doctor from Izmir, goes to Cappadocia with her lover Arhan to see where he was born and raised and to meet his family. While waiting to meet Arhan's family, Deniz learns from Arhan's mother Gönül that Arhan has a betrothed. This promise is a promise made by two families to each other, Arhan has never made such a promise. Deniz decides to return to Izmir after hearing what she hears, but Arhan stops her at the airport. The only person she wants to spend her life with is Deniz. Arhan and Deniz decide to get married. However, the wedding night turns into a nightmare when Arhan's brother Cemal is shot. Now they have a killer to find and their love will be tested with difficulties...