As Lucy and Chris set off on an interrailing trip, they look forward to rolling countryside and historic city centres.

At first it's all skinny dripping, adventure and nights out. But relationship problems rise to the surface as an attempt at sex on a train goes disastrously wrong - and when it becomes clear that Chris believes an 'al fresco' is a salad.

Chris hides his emotional repression and thoughtlessness behind a wall of childish behaviour, whilst Lucy begins to consider her future. As the trip forces the couple into close quarters, can their relationship survive?