This sequel to the popular British comedy sees a new teacher (David Tennant) take over. When he enters his school in the National 'Song for Christmas' Competition, he and his pregnant wife, and the schoolchildren, embark on an epic road trip that ends up with a birth and a donkey, where he must embrace his fears and become a hero.

Paul, charged with directing his school's Nativity play, falsely boasts that his ex-girlfriend plans to turn the production into a film.

This Christmas the pupils of St Bernadette's and their much-loved, madcap teacher Mr. Poppy are back for their biggest adventure yet involving fantastic flashmobs, excitable elves, Christmas carols and of course Archie the donkey! When their new teacher Mr. Shepherd loses his memory and forgets all about Christmas, as well as his fiancée Sophie and the whereabouts of the beloved Archie, it's up to the pupils of St Bernadette's to save the day. Led by the ever enthusiastic Mr Poppy, they embark on a Christmas journey like never before - but time is against them if they are to help Mr Shepherd get to New York in time for his magical yuletide wedding!