The film involves a scheme by seven scientists, supposedly the seven most brilliant men on Earth. They have a plan to eliminate war by covering the world with a "docility gas" that will make everyone peaceful. A noble goal. Unfortunately, unknown to the idealistic scientists, Thrush (the evil organisation which is Uncle's nemesis) has financed their operation and plans to benefit from it by being the world's masters.
While the film isn't too bad in itself, the series was intended for weekly television episodes and should have been left as such. At some point I would like to add the "Man from Uncle" tv series to my DVD collection, but it's still too expensive. I'm hoping there will be a cheaper edition at some point in the future.