Live concert filmed at the Family Dog Ballroom, San Francisco in September 1970, featuring three of the biggest bands of the hippie era. Reflecting the music of the late '60s hippie scene in the Haight-Ashbury area of San Francisco, this film records the performances of Santana, the Grateful Dead, and Jefferson Airplane as they played together on the same bill, both singularly, and in an all-star jam involving the three bands.