In 2015 his short film "Prologue" received both an Oscar nomination and a BAFTA nomination in the category of best animated short. "Prologue" was the first 6 minutes of his hand-drawn feature film "Lysistrata", based on the ancient Greek comedy by Aristophanes, which Williams joked should be sub-titled "Will I Live to Finish It?". Williams described "Prologue" as "the only thing so far in my career that I’ve ever really been pleased with." In 2013 Williams told "The Guardian", "All I need is some time and five or six assistants who can draw like hell." The film was intended to be "grim but funny and salacious and sexy". Like "The Thief and the Cobbler", "Prologue" would never be completed. But, as Williams put it: "it's the doing of it that matters. Do it for the love of it. That's all there is".