Earth, 1964. An accident on landing vastly reduces the TARDIS and the travellers in size. They come across a scheme run by Forester, a ruthless businessman and his misguided scientist colleague Smithers to launch a new insecticide which is capable of destroying the local ecology. Forester is prepared to commit murder to secure the success of this project - can the inch-high travellers somehow foil him? (thetvdb.com)