The toilet goes by many names - the throne, the bass, the porcelain temple - but it is the most ubiquitous of rooms, being found in every New Zealand household. This documentary explores the fantastic diversity of the lav, from Thomas Crapper's first flush toilet in 1870, to the magnificent Hundertwasser-designed Kawakawa public toilets, then back to the future with variants on the composting loo, itself a development of that great Kiwi tradition - the long-drop.