Christmas. The busiest time of year for a vicar, and Adam is full of ideas for his first Advent in London. However, he soon discovers that Christmas at St Saviour's is quite different to his sleepy Suffolk parish. He's under pressure from the Archdeacon to maximise seasonal profits, the diary's packed with unusual events and he's up at the crack of dawn every morning to cook breakfast at the homeless shelter. Exhausted, with a permanent hangover and Midnight Mass looming he's in no mood for a house guest - least of all Alex's cantankerous father Martin...