In A CHRISTMAS CAROL GOES WRONG the Cornley Polytechnic Drama Society have been blacklisted by the BBC after ruining Peter Pan, however, they are not taking their ban lying down and force themselves back on the BBC by hijacking the jewel of the Christmas schedule, a 'live' production of A Christmas Carol. With a little help from Sandra's aunt, Dame Diana Rigg (All Creatures Great and Small), the Cornley gang try to make the show work but soon realize they are completely out of their depth, with no idea how to direct a live studio or handle the special effects. Worse still, internal rivalries are revealed during the broadcast while an angry professional cast tries to get back into the studio. Special guest star Sir Derek Jacobi (Last Tango in Halifax) tries to keep up!