Follow Adam and Emma on their daily commute from the village of Langton to London, where they meet the same passengers every day. One morning, Adam breaks the unspoken taboo of talking to strangers on a train and invites the entire carriage to hold their own Christmas party together.

Cast: Alfred Enoch, Kaya Scodelario, Timothy Spall, Jack Donoghue, Steve Oram, Alexandra Roach