Laurence Llewelyn-Bowen visits some of the finest houses in Wales, stepping back in time to uncover their hidden stories. He turns his attention to Plas Llanmihangel - an impressive Elizabethan manor house in the Vale of Glamorgan. During his historical journey of discovery, Laurence meets the couple who have spent the past 20 years battling to restore a building with a very colourful past.