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.
- Status
- Returning Series
- Original Title
- Yeraltı
- Original Language
- Turkish
- Production
- MEDYAPIM
- Network
- FOX, MBC Shahid, NOW
- Created By
- Berna Aruz
- Next Episode
- S2 E1 · Oct 7, 2026 · Episode 1
- Last Episode
- S1 E16 · May 20, 2026
Cast
Media
Official Trailer
Frequently Asked Questions
Where can I watch Underground online for free?
You can stream Underground (2026) right here on FlixWow — every episode, in HD, completely free. No subscription, no signup, nothing to install.
What is Underground about?
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 co…
How many episodes does Underground have?
Underground has 17 episodes across 2 seasons — all available to watch free on FlixWow.
Who stars in Underground?
The series stars Deniz Can Aktaş, Uraz Kaygılaroğlu, Devrim Özkan, Sümeyye Aydoğan, Burak Sevinç and more.
When was Underground released?
Underground was released in 2026 and is streaming free on FlixWow.
Is Underground worth watching?
Underground holds a rating of 8.2/10 from viewer votes (12 ratings). Watch it free on FlixWow and judge for yourself.