Deniz Can Aktaş
Haydar Ali
Series
Watch Underground (2026) Online
Synopsis
Haydar Ali avenges his family's murder and ends up in prison, where he falls into the orbit of Turkey's most dangerous crime cartel. Recruited by intelligence to dismantle it from within, he must earn the trust of its ruthless boss — a man who becomes his closest ally. Three years later, freedom brings the deadliest complication yet: the woman he never stopped loving is now that same man's wife.
Episodes
Season 1
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1. Episode 1Now viewing2026-01-282h 26mThe passionate love between Haydar Ali and Ceylan takes an irreversible turn on an unexpected night, placing Haydar Ali at the heart of both the state’s secret plans and Istanbul’s ruthless underworld. Ceylan, determined to protect the man she loves, pushes beyond her own limits, navigating the thin line between innocence and guilt on a dangerous journey. In this world where betrayal, loyalty, and survival instincts are tested, a single wrong step can have deadly consequences for everyone.
2. Episode 22026-02-042h 35mHaydar Ali being forced into the marriage process with Sultan pushes the conflict with Ceylan to a breaking point, as their tense exchange during the ring purchase reveals that their past love is still an unhealed wound. Ceylan threatens to tell everything to Bozo if Haydar Ali goes through with the marriage, bringing their relationship to the edge. Meanwhile, Bozo anticipates a major upcoming operation, moves his money out of the city, and signals that a huge storm is brewing in the underworld. The intel brought by Merdan about the international team called “Shadow” shows that the threat is no longer confined to the family. The episode ends with Haydar Ali standing at a critical crossroads: he must navigate Bozo’s trust tests while entering an almost irreversible conflict with Ceylan, making the underground war inevitable.
3. Episode 32026-02-112h 21mWhile Hamburglu’s proposal is openly discussed within the family, the fact that Bozo is waiting for the “sign that will come from the underworld” gives the sense that the approaching war is only the visible part of something much bigger. On the state front, Aslı cornering Pınar makes the balance even more unstable, while the shadow of the word “betrayal” begins to circulate between Ceylan and Bozo. The unexpected deal that Sultan makes with Haydar Ali and the shocking confrontation experienced during the night ignite the fuse of a rupture that will affect not only two young people, but the fate of two families.
4. Episode 42026-02-182h 29mWhile Bozo is in custody, discussions about leadership within the family intensify. Merdan puts his own plan into action, and Haydar Ali decides to take control once and for all. The secret message sent by Bozo, citing four names linked to the betrayal, completely changes the balance of power. At the same time, a shadowy business network with connections in Malta emerges. On the police side, covert maneuvers conducted through lawyers make the confrontation in the underworld even more complex. The major turning point occurs when Ceylan, alongside Gülsüm, goes to Azize's house and openly declares war: "Since you started this war, you will face the consequences." Amidst love, loyalty, and the struggle for power, Haydar Ali embarks on a path of no return, trying to keep the family together while seeking to discover who the true enemy is.
5. Episode 52026-02-252h 13mThe fact that Bozo throws himself in front of the bullet for Haydar Ali turns everything upside down in Yeraltı. The bullet may have missed its target, but the score has not been settled. Caner is captured, Zafer is summoned, and a single question hangs before everyone: Will this end here, or is the real war just beginning now? Bozo’s decision seems to contain the bloodshed, but some are ready to interpret this calm as weakness. While Haydar Ali finds himself torn between debt and conscience before the man who risked his own life for him, Ceylan tries to uncover the real reason behind her husband’s sacrifice. Sultan faces her own past one last time and closes certain doors once and for all. On Paşa’s side, a crisis on the verge of exploding and an even bigger plan being set in motion behind the scenes.
6. Episode 62026-03-042h 27mThe bullet that hits Pasha in the chest targets not just one body, but the entire family. While hope and fear intertwine in the hospital corridors, Bozo's cold and harsh demeanor shocks everyone. As Ceylan tries to keep the family together, Sultan's digging into Haydar Ali's past in the hospital corridors brings the "ex-lover" issue back to the forefront, igniting a hidden tension. As questions grow about whose orders Pasha followed that night, the fire of revenge spreads rapidly through the neighborhood. Haydar Ali, believing Pasha didn't act alone, decides to uncover the truth. Gunfire in a house in Tuzla changes the course of events. The actions of Ferhat Bozo's impulsive cousin, Derman, instead of covering up the truth, open the door to a bigger confrontation. Yavuz catching them red-handed brings the reckoning directly to Bozo. This time, the war is growing not just in the streets, but in people's hearts. And Bozo's decision will reveal who the real enemy is.
7. Episode 72026-03-112h 30mThe decisions Bozo has made reestablish the balances in the Underground, while a fragile order forms within the family. As everyone tries to understand where the new boundaries have been drawn, it becomes increasingly clear that some accounts have yet to be settled. Meanwhile, the steps taken on the Azize front are signaling the signs of an approaching major reckoning. However, an even greater danger that no one knows about is quietly growing. A secret that has fallen into Hamburglu’s hands holds the power to expose everything about Ceylan and Haydar Ali’s past. If this truth comes to light, it won’t just destroy one relationship—it will shatter all the established balances. At the same time, an unexpected development from Europe becomes the harbinger of a new storm in the Underground. Now, everyone in the Underground is chasing the same question: Whose message is this unexpected development… and what’s next?
8. Episode 82026-03-182h 28m10.0While openly voicing what his weaknesses are, Bozo clearly demonstrates that this is not a weakness, but rather a line that must be protected. The concepts of family and loyalty take on a much more dangerous meaning this time. Meanwhile, the long-unspoken feelings between Sultan and Haydar Ali begin to be openly expressed for the first time. While Sultan now views the past as a regret, she is no longer playing for keeps. Another unexpected surprise comes when Ceylan, chasing after Paşa's happiness, encounters it. Pınar's confession to Ceylan heralds a breaking point not only for Pınar, but one that could also change the future of Paşa and the family. After Azize's move, Bozo responds in kind and clearly shows that the war is now inevitable. He confronts Haydar Ali and Azize. He issues a bold challenge to Azize. The family that tests others will be tested by family. Azize must either give up on Hülya or pay the price with Hülya's life.
9. Episode 92026-03-252h 18mCeylan’s arrival at Sultan’s house brings long-buried feelings from the past back to the surface between her and Haydar Ali. The tension between the two intensifies even more with the unsaid words; meanwhile, the budding closeness between Sultan and Haydar Ali makes this balance all the more complicated. Now under the same roof, the emotions of three people are irretrievably tangled. On Paşa’s front, things take an even more inextricable turn. Pınar’s pregnancy drags Paşa to the brink of an irreversible decision, while Paşa, caught between his heart and his logic, can neither move forward nor fully let go. Every move he makes pushes him a little deeper into the impasse. Azize may seem to have stepped off the stage, but she’s not out of the game. This time, she’s preparing for a move whose timing and origin remain unpredictable.
10. Episode 102026-04-012h 25mThe pent-up anger between Bozo and Haydar Ali erupts as they come face to face at the police station. Although the confrontation quickly turns into a physical clash, this encounter takes their relationship to a completely different place rather than breaking it apart. However, the danger waiting outside is strong enough to shake this fragile balance at any moment.
11. Episode 112026-04-082h 18mPaşa’s loss deeply shakes everyone’s lives, as those trying to bring him back to life clash with his desire to face his grief alone. Bozo’s harsh confrontation and Ceylan’s heartfelt words push Paşa to the edge of an irreversible decision. Meanwhile, Ceylan’s suppressed emotions resurface, and the fragile balance between Sultan and Haydar Ali teeters on the brink. As power shifts on Azize’s side, a mysterious visitor from Europe reshapes the game. Kartal’s arrival is set to redefine the balance of power in the underworld.
12. Episode 122026-04-222h 19mTension peaks when Sultan confronts Ceylan with the ring, and its discovery in her drawer pulls her into a new lie. As Ceylan struggles to contain the situation, she is drawn into an inevitable confrontation with Haydar Ali, where her suppressed emotions begin to spiral out of control. Meanwhile, the rekindling closeness between Sultan and Haydar Ali makes the balance even more fragile, while dangerous schemes behind the scenes—driven by Hamit and Bozo—ignite the spark of open conflict. As Kartal’s shadow looms larger, everyone is pulled into a harsher game where truths can no longer remain hidden.
13. Episode 132026-04-292h 38mWhat appears to be a simple family gathering at the farm organized by Bozo hides a much larger plan beneath the surface. As everyone believes they are enjoying a peaceful day, Kartal’s hidden setup is triggered, and a sudden explosion shakes the balance of the underworld, revealing that the war has become deeply personal. In the aftermath, Haydar Ali is shaken by his sister’s fight for survival and is forced to confront his past and choices, while Ceylan faces her suppressed feelings as her life with Bozo begins to fall apart. As Kartal’s scheme through Kaan reshapes the game, the line between sacrifice and betrayal fades, and in a world where no one remains innocent, those trying to protect their loved ones will pay the highest price.
14. Episode 142026-05-062h 19mAs the power struggle between Bozo and Haydar Ali intensifies, Haydar Ali’s decisions begin shaking the balance of the underworld. While Kartal’s hidden schemes reshape the course of the war, Ceylan is forced to confront both her suppressed feelings for Haydar Ali and the cracks forming in her life with Bozo. A critical detail noticed by Melek threatens to expose long-hidden truths, pushing Haydar Ali to openly challenge those keeping him out of the game.
15. Episode 152026-05-13Kartal's kidnapping of Ceylan turns the entire balance upside down. As Bozo finds himself dragged into such a massive impasse, Haydar Ali, unarmed and alone, comes face-to-face with death in order to rescue Ceylan. With Ceylan trapped in the mountain house, there's nowhere to escape anymore. As Ceylan reveals the truth behind her marriage to Bozo and the deal she made with intelligence, Haydar Ali begins to question everything he thought he knew. Bozo is forced to confront not only Kartal but his own marriage as well. As the chasm between the life Ceylan wants and the world Bozo has built grows ever wider, an irreparable rift occurs between the two. On the Sultan and Haydar Ali front, however, the emotional balances shift completely. The step Sultan takes opens a new door in Haydar Ali's life; for Ceylan, facing certain truths becomes heavier than ever before. Armed with the truths he's learned, Haydar Ali now finds himself on the threshold of an entirely different crossroads.- 16. Episode 162026-05-20
Cast
Top Billed Cast
Uraz Kaygılaroğlu
Bozkurt
Devrim Özkan
Ceylan
Sümeyye Aydoğan
Sultan
Burak Sevinç
Merdan
Ülkü Hilal Çiftçi
Melek
Koray Şahinbaş
Efraim
Hülya Gülşen Irmak
Gülsüm
Ekin Mert Daymaz
Ferhat
Emir Benderlioğlu
Yavuz
Hakan Çelebi
Paşa
Nilay Erdönmez
Aslı
Ceren Kaçar
Yıldız
Sunay Kurtuluş
Adnan
Mehmet Yılmaz Ak
Yılmaz
Ekin Aksoy
Pınar
Muhammed Cangören
Sevil Akı Saner
Azize Habban
Ece Çeşmioğlu
Hülya
Availability
Where To Watch Legally
No legal streaming, rental or purchase options for Underground were reported for this region.
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FAQ
Frequently Asked Questions
Is Underground available to watch online?
Vidbox does not currently have a legal streaming, rental or purchase option on record for Underground in this region.
How many seasons does Underground have?
Underground has 1 season and 16 episodes.
When did Underground first air?
Underground first aired in 2026.
Is Underground still running?
Yes, Underground is an ongoing series.
What genre is Underground?
Underground is classified as Drama, Action & Adventure.