Robert Kingsley, a top UNCLE official who is based in Hong Kong, mysterious disappears. He is recruiting top people in various fields. He wants to end 'the never-ending battle' between good and evil 'in favor of good.' His method: a 'docility' gas. Napoleon Solo and Illya Kuryakin are sent to find Kingsley. What Kingsley doesn't realize is his wife is allied with Thrush, which is financing his dream.