What happens when you return from a family holiday to France and open the boot to find a Syrian refugee where your luggage was supposed to be? That’s the situation facing new couple Peter and Katy when they get back to Dorking from their first family holiday with Katy’s young son John, who has spent the journey from Calais winding up his would-be stepdad. Their unexpected passenger is a bloke called Sami who hopes to claim asylum in Britain.