Holly has one thing and one thing only to prove to her family - that she is a capable and organised adult, who can host the perfect Christmas day. The only problem is, Holly is neither of those two things. Disaster seems to follow Holly wherever she goes and this time, it's in the shape of The Christmas Ruiner; a smug stranger who appears at the worst of times, taking the last of everything Holly needs to impress her family. Cue her best-friend...