Mel Giedroyc and Sue Perkins host as five celebrity acts sing and dance to iconic pop tracks, all in aid of Comic Relief. In each episode, two acts are put through to the grand finale, where viewers will vote for their champion. Competing in this episode are the stars of Holby City and Casualty, quiz geniuses the Chasers, dancing stars James and Ola, EastEnders actor Danny-Boy Hatchard and new boy band Boys Allowed. The judging panel is made up of Claudia Winkleman, Adil Ray as Mr Khan and Russell Kane, and there are appearances from Katherine Ryan, Shappi Khorsandi, Amanda Holden and Tamzin Outhwaite, as well as music from Louisa Johnson.