Mary hasn’t told her family that she’s coming home for Christmas. She decided it would be fun to surprise them when she got a last-minute flight after breaking up with her boyfriend just before the holidays.

But when she arrives in Dingle after a long and tortuous journey, she discovers that they’ve had the same idea and have gone to New York to surprise her.

To make matters infinitely worse, they’ve done a house swap with grumpy actor Evan, who makes it clear he doesn’t want her around. So instead of the cosy family Christmas she’d been looking forward to, she’s stuck with a housemate who just wants to be left alone to sulk and take moody walks on the beach.

But while temperatures drop outside, things start to heat up between Mary and Evan. Maybe it’ll be a merry Christmas after all …