"One Toke Over the Line...and Still Smokin'" celebrates the lives and career of folk-rock duo Brewer and Shipley. Their Top 10 song, "One Toke Over the Line," became a counterculture anthem in the early 1970s and earned them a spot on Nixon's enemies list. From their first performances on the national folk music circuit to their 1967 debut at the Troubadour, Brewer and Shipley became part of the vanguard of the folk-rock era. The film follows Michael Brewer and Tom Shipley on tour around the country in the years leading up to the 50th anniversary of their musical act. Brewer and Shipley produced a rich repertoire of music and recordings that continue beyond their 50 years as a team. With humor and insight, Brewer and Shipley sing and tell tales of their eventful and creative lives on and off the road and offer their passionate opinions about music, politics, and culture. The film features never-before-seen archival material and musical performances, including new and unreleased music.