Directed by Sam Jones, this intimate documentary offers an unprecedented backstage pass into the world of the Grammy-winning folk-rock band. The film follows the four members of Mumford & Sons as they embark on a unique and ambitious project: transforming a historic Los Angeles theater into a living, breathing musical hub. Rather than a standard concert film, "Mumford & Sons: The House Band" chronicles the band’s creative process as they invite a rotating cast of musical guests to join them for spontaneous performances and collaborations. The central narrative explores the band’s desire to break free from the constraints of a typical tour, seeking a raw, unscripted connection with their audience and each other. Viewers witness the joy, tension, and sheer unpredictability of building a nightly show from scratch, revealing the vulnerability and camaraderie that fuels their artistry. With a warm, fly-on-the-wall tone, the documentary captures the band’s journey from rehearsals to the final bow, offering a heartfelt glimpse into the soul of a group reinventing what it means to perform.