As dismembered legs begin appearing across Istanbul, Commissioner Fatih and his partner Doruk—a U.S.-trained forensic psychiatrist—race to catch the killer, even as Doruk’s wife Beyza, haunted by mysterious blackouts, discovers a chilling connection between her missing time and the victims.

“Hür Adam” or “Free Man” in English is the real-life story of a very influential Kurdish scholar in Turkey that had lived between 1877-1960, 'Said Nursi'. A writer, philosopher, and philanthropist, he compiled many books on Islam covering various themes of faith, brotherhood, and philanthropy and exploring the reasons behind societal weakness, poverty, ignorance, and divisions.

Eyüp, a grandfather living in an Anatolian village, yearns to visit Ebu Eyyub El Ensari's sepulcher. His daughter and son-in-law, however, are reluctant to let him achieve this dream due to his old age and illness, but Eyüp frequently runs away from home to fulfill his dream. One day, when his daughter and son-in-law are away, he runs away again and gets into the car of a young man named Aydın.