The şErtuğfourth season (2017–2018) of the Turkish TV series, Diriliş: Ertuğrul, created by Mehmet Bozdağ, succeeds the third season and precedes the fifth and final season of Diriliş: Ertuğrul. The fourth season of the historical drama television series premiered on and concluded on .
Plot
It is believed that Ertuğrul is dead despite the truth being that he is actually captured by some slave traders. Meanwhile, Emir Sadettin convinces Dündar, Ertuğrul's brother and the new Kayı Bey, into selling Hanlı Pazar and moving back to Gündoğdu's tribe but is stopped upon Ertuğrul's return and is forthwith banished. After Ertuğrul's son, Gündüz, is kidnapped, Ertuğrul declares war against Karacahisar and is successful in conquering it. Following Ares' capture, Ertuğrul takes him to the Sultan and tells him to confess to the Sultan about Sadettin Köpek's misdeeds. The plan nearly works but Köpek is saved by the Sultan's wife, Mahperi Hatun and leads to an event turning Tekfur Ares, later killed by Noyan, into a Muslim. Soon after that, the Sultan is killed and Köpek's increase in power in the palace creates problems for the new Sultan, Gıyaseddin. Gıyaseddin allies with Ertuğrul and with the help of Hüsamettin Karaca, Köpek is beheaded. After this, Ertuğrul faces the return of Noyan but is successful in defeating him and his devious sister, Alangoya, who attempted to kill Ertuğrul's son, Osman, who was born on the same day as his mother's death. Noyan prepares for a battle, historically known as the Battle of Köse Dağ and the Kayı move to Söğüt.
Cast
Main characters
Engin Altan Düzyatan as Ertuğrul Bey
Hülya Darcan as Hayme Ana
Esra Bilgiç as Halime Hatun
Cengiz Coşkun as Turgut Alp
Nurettin Sönmez as Bamsı Beyrek
as Sadettin Köpek
Burak Dakak as Sultan Gıyaseddin Keyhüsrev
Cemal Hünal as Tekfur Ares / Ahmet Alp
Supporting characters
Gülsim Ali as Aslıhan Hatun
as Hafsa Hatun
Ayberk Pekcan as Artuk Bey
Ozman Sirgood as İbn-i Arabi
Burak Hakkı as Sultan Alaeddin Keykubat
Engin Öztürk as Günalp Bey
Ertuğrul Postoğlu as Bahadır Bey
as Titan
Sinem Öztürk as Mahperi Hatun
Barış Bağcı as Baycu Noyan
as Sungurtekin Bey
Batuhan Karacakaya as Dündar Bey
Minor characters
Sera Tokdemir as Marya
Melih Özdoğan as Samsa Alp
Celal Al as Abdurrhahman Alp
Edip Zeydan as Dumrul Alp
Hasan Küçükçetin as Atabey Şemseddin Altun Aba
Orhan Kılıç as Atsiz Bey
Arda Öziri as Göktug
Ergun Taş as Aziz
Hakan Serim as Günkut Alp
Yaman Tümen as Gündüz Alp
Hakan Bozyiğit as Komutan Kostas
Aslıhan Güner as Karaca Hatun
Gürbey İleri as Sancar Bey
as Alçiçek Hatun
Hakan Onat as Komutan Angelos
Melikşah Özen as Melikşah Alp
Guest characters
Serdar Gökhan as Süleyman Şah
Gönül Nagiyeva as Alangoya (spies under the name Almıla Hatun) Burak Demir as Hüsamettin Karaca Oya Unustası as Sügay Hatun Ali Bühara Mete as Mergen (disguised as Eynece) Hasan Şahintürk as Tekfur Kritos Mert Soyyer as Aleko Levent Sülün as Simko Alper Atak as Antheus Merve Kızıl as Esma Hatun Sezanur Sözer as Eftalya as Ögedei Han