It’s the first day off rehearsals for Sid’s Christmas single. He gathers The Mill gang together in the hope of a smooth start to the singing proceedings; however, things start going in the complete opposite direction.

Firstly, the team can’t agree on what song to sing. Some people vote for ‘Merry Christmas Everyone’, while others argue for ‘Silent Night’. Al makes things even worse when he demands to sing Silent Night in German! Then Valerie demands to have a solo, and Sid offends the group by splitting people into two camps – main singers and background singers.

Will the Mill staff be able to put their egos to one side and come together in the name of charity?