Watch Underground Season 1 Episode 4 Online

Season 1 Episode 4 — Aired on Feb 18, 2026 • runs about 149 minutes.

Notable cast/guest names in this episode include Deniz Can Aktaş, Uraz Kaygılaroğlu, Devrim Özkan, Sümeyye Aydoğan.

This page includes 1 official still(s) (when available) plus legal availability links.

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Synopsis

While 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.

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