In this documentary, interviews and rare archive footage weave together performances from a landmark multi-artist concert at the Royal Festival Hall in London, celebrating the songs and artistry of the great folk-blues troubadour Bert Jansch. Ralph McTell, Robert Plant, Donovan, members of Pentangle, Bernard Butler, Martin Carthy, Martin Simpson, Lisa Knapp and more pay tribute to Jansch, who died in 2011.