Experienced detective Ian Fabel no longer wants to hunt killers. He's just tired - and is going to retire. But first he must complete his last case. The case of a maniac nicknamed the Clown, who kills his victims during the famous Cologne carnival. This strange madman has his own rules of the game. He devours his victims. After all, the basis of modern funny carnivals are the ancient and dark Celtic festivals of ritual “eating of flesh”! But how does the Clown know this? As soon as Ian finds out, he will find the killer.