Description Underbelly is based in Paris with all scenes filmed underground. Each scene embraces the cities dark & erotic reputation that stems deep within… Keyword here is DEEP! The opening scene we are introduced to Antonio & Stephan who show what its like to slam down a Screw Driver, and we are not just talking cocktails. From sexting on cell phones through to fucking like animals in the wild, the scenes that follow bring filthy hot sex back to the small screen.