As Fenisha and Ethan prepare for their big day, Matthew battles his emotions, Lev faces up to his sexuality once and for all, and Ollie’s mystery illness is finally diagnosed.

It's Christmas in the ED, and the team face an emergency blood shortage. Whilst Stevie fights to save a family man’s life, Iain takes a big risk to secure the hospital’s supply.

Loyalties are tested on the day of Faith and Iain’s wedding.