Bob Bryan's fourth film about graffiti is a how-to guide that reveals the basic techniques for creating graffiti murals and aerosol artworks on walls and canvas. Taught by Sano, a two-time winner of the International Graffiti Art Competition, this step-by-step tutorial covers the concepts, aesthetics, techniques and style required to master the underground urban art form, and sheds light on the misunderstandings surrounding the discipline.