Jack & Mary Longthorp run a guest house in a small town on the south coast of England. Bookings are slow, so to liven things up they decide to have a "Sixties Night".

This particularly pleases a couple of their guests who are revisiting the place where they spent their honeymoon many years ago.

All does not go according to plan, in fact there are many misunderstandings, causing lots of hilarious situations. But all turns out right in the end - with the help of TYSON the mouse!