Ferdi (Ferdi Tayfur) moves to Istanbul with his mentally disabled sister, Oya (Sibel Savaş), desperately seeking specialized medical treatment for her. To cover the heavy medical expenses and build a future for them—including his plans to marry Figen (Nalan Türkoğlu)—Ferdi takes a job singing at a local music hall (gazino). Tragedy strikes when ruthless local drug dealers and criminals assault Oya, leading to her brutal death. Shattered by grief on the eve of his marriage, Ferdi abandons his music career and promises of a quiet life. Consumed by rage, he sets out into the city’s dark underworld on a relentless, methodical campaign of vengeance to hunt down every person responsible for destroying his sister.
