"The Doctor is feeling confident: this time the TARDIS has landed on Earth; in England; in 1963. But when he and his companions venture outside, they are soon lost in a maze of ravines, and menaced by gigantic insects. Yet the insects are dying -- every living thing is dying ... Meanwhile, in a cottage garden on a perfect summer's day, a man from the Ministry arrives to put a stop to the production of DN6, a pesticide with the power to destroy all life-forms. But the men who invented DN6 will stop at nothing -- not even murder -- in their desire to see DN6 succeed. Can the one-inch-tall Doctor, along with granddaughter Susan and schoolteachers Ian and Barbara, foil their plans?"--