Yusuf Şaplak is a seemingly ordinary man who has a condition where he can't stop laughing. An idealist young doctor decides to cure him.
Reminiscent of Martin Scorsese's 1985 production, After Hours, this film narrates the events of a night in the chaotic backstreets of Beyoğlu in Istanbul. The day he receives his wage, and after arguing with his wife, Haydar (Tarik Akan) leaves the house in a fury and heads to Beyoğlu for a wild night out. However, a prostitute and her pimp bring him such troubles, and he finds himself penniless and in police custody.
Kilink visits Istanbul to grab a destructive formula which is in the hands of an once-collaborate scientist, Professor Houloussi. He murders him, kidnaps his daughter, tortures her in some gloomy dungeon, and then kidnaps more people and tortures them but still, the formula remains hidden. Meanwhile, the son of Professor Houloussi is blessed by a Devinne spirit and turns into Superman! But will he be a worthy opponent to the unbeatable and evasive master of all criminals, Kilink?