Three people, three extraordinary stories. All lived out within a hundred London streets.
Hayley and James are young and in love. They both make the same mad split-second decision to swap trains and surprise each other. Passing each other in the station, they are completely unaware that they have just swapped Christmases.
"They've swapped Christmas - again. Can Hayley and James' relationship survive another turbulent family Christmas or has their future together gone off-piste?!"