The film tells the story of a man trying to save his sister from a life of crime. When Yusuf was young, his parents separated. His mother took his sister Zeynep and moved to Istanbul. When Yusuf grew up, he followed in his father's footsteps and became a boat captain. He and his closest friend Salih made a living by hunting sponges. Many years pass, but Yusuf's longing for his sister grows stronger. He writes her a letter, urging her to return home. Meanwhile, Zeynep is struggling to escape the life of crime she has fallen into. She escapes from Orhan and his men and goes to her brother's side. However, Orhan and his men are searching everywhere for Zeynep.