When a lovesick musician is given the wrong number for his dream girl, he teams up with a driven psychology student to find her. Together, they spark a hilarious campus-wide frenzy that tests their own hearts and ambitions along the way.

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.