When successful 80s nightclub manager Tony Towers boards a magical train at Christmas, he discovers that each carriage harbours a different stage of his life and the actions he takes in one carriage directly affect his life in the next. Can Tony change his life – and the lives of the people he loves – for the better, or will he just make things worse?

Brighton based Detective Superintendent Roy Grace is a hard-working police officer who has given his life to the job, but his career is currently at rock bottom. He’s fixated by the disappearance of his beloved wife, Sandy, and running enquiries into long forgotten cold cases with little prospect of success. Following another reprimand for his unorthodox police methods, Grace is walking a career tightrope and risks being moved from the job he loves most.