What will happen in Karadut Season 1 Episode 1?

Zuhal Erdem, a personal development specialist at the peak of her career, looks like a modern city woman, but she is a completely different person in the house she lives in with her three sisters and father. Zuhal, who cannot go beyond the order and rules established by her father Çetin because of the oath she took, faces her loneliness once again while watching her sister Aslı's wedding preparations. In the meantime, she is unaware that the person who coincidentally comes her way will change her life. Zuhal, whose fate constantly intersects with Tayfun, tries to resist her feelings. While Tayfun tries to understand Zuhal's resistance, an unexpected tragedy will reveal the truth behind the oath Zuhal took to her father.