This is the story of Robert Kenner, a mild mannered postman from Peckham, who, six years ago was struck by a meteor that gave him superpowers. Now he works for the Ministry of Defence as a civil servant, saving the world, filling out one bureaucratic form at a time. He is allowed every Tuesday off, as sanctioned by the UN, and today, the day on which the film is set, is the day he is finally going on a date with June; the woman he has been in love with for some time now. It should all be fine - if a visiting American Senator doesn't start World War Three...