Detective Mehmet Süleyman comes to Istanbul from England to join Superintendent Çetin Ikmen's team. After a university student is found dead in a cemetery, Mehmet finds himself involved in his first murder investigation.
Suspicious messages found on Gozde's phone point the arrows to the secret boyfriend Kemal. The team that interrogated Kemal goes after another suspect with the new information they obtained.
The public murder of music manager Demir, who belonged to one of Istanbul's most successful families, initially appeared to be linked to his relationship with the music business. Meanwhile, Mehmet Suleyman reconnects with his father Abdel.
Convinced that Dillon or Cem is responsible for Demir's death, Ikmen's team is given 24 hours to identify the killer. When, Mehmet Suleyman and Kemal find a USB memory that Leyla apparently hid on purpose, even though it seems unfamiliar.
Suleyman and Ayse attend a house fire, where a man has died, his wife Sara Yilmaz, a researcher remains in hospital. Suleyman is convinced that it's linked to the Kayra Khan case.
