In this illuminating documentary, Keanu Reeves takes viewers on a captivating journey through the evolution of filmmaking, exploring the seismic shift from traditional celluloid to digital cinema. Directed by Christopher Kenneally, "Side by Side" features an extraordinary array of visionary directors including James Cameron, David Fincher, David Lynch, Robert Rodriguez, Martin Scorsese, Steven Soderbergh, Danny Boyle, George Lucas, and the Lana Wachowski and Andy Wachowski duo, alongside cinematographers like Wally Pfister and Michael Chapman, and actress Greta Gerwig. The film delves into the passionate debates surrounding the artistic and technical implications of digital versus analog film, examining how each medium shapes storytelling, visual aesthetics, and the very soul of cinema itself. Through intimate interviews and behind-the-scenes footage, the documentary presents a balanced exploration of the conflict between purists who cherish the organic warmth of film and innovators who embrace the limitless possibilities of digital technology. As filmmakers share their personal experiences and philosophical perspectives, "Side by Side" becomes an essential meditation on the past, present, and future of the art form, inviting audiences to ponder what is gained and lost in this transformative era.