Prue is intelligent, artistic, independent - and bored. Pressurised by her mother to make a conventional and dull marriage, she is delighted to escape London and seek retreat with her eccentric and bohemian aunt in Cornwall. A chance encounter with an attractive young artist on the sea shore leads to day after idyllic summer's day of exploring the Cornish countryside and coast. But there is something troubling Daniel and Prue, now deeply entangled, feels compelled to discover what it is.