On "Christmas Eve-Eve" at Marylebone Station, young lovers Hayley and James part ways to spend the holidays with their respective families. In a sudden romantic impulse, both decide to surprise each other by swapping trains at the last second, only to realize too late that they have accidentally switched places.
Trapped by a massive snowfall that shuts down the rail network, Hayley finds herself navigating the rigid, aristocratic traditions of James’s father in a massive country estate, while James must survive the boisterous, chaotic, and overcrowded Christmas of Hayley’s working-class family. As they struggle to hide their identities and manage their eccentric in-laws, the couple discovers long-held secrets about one another that put their budding relationship to the ultimate festive test.
Your Christmas or Mine? - official trailer
Watch Your Christmas or Mine? on Amazon Prime Video