A look at the making of the Pogues and Kirsty MacColl's classic bittersweet Christmas love song. The documentary looks back at the making of the song in the company of singer Shane MacGowan, and other Pogues sharing their memories include Spider Stacy, Cait O'Riordan and Jem Finer. With contributions from Imelda May, Bob Geldof, Paul Simon and Christy Moore.