With war against Germany approaching, the British government sends out a request for a death ray. Robert Watson Watt (Eddie Izzard) suggests something else, radar. Instead of the stuffy professors from the highest universities, he recruits other weathermen. The program faces opposition from his superior Lindemann with Churchill calling it building castles in the sky.
Not every story can be dramatized and this movie tries its hardest. The small guy against the world is always a good angle. All of that works very well. The technical aspect of radar is explained but the drama isn't that dramatic. I'm reminded of squeezing an orange to explain the nuclear bomb. His married life is probably the least appealing. It diminishes his wife. It's almost more compelling to have her fade into the background which would justify her leaving. As for the acting, these are experienced veterans. Eddie Izzard is solid. Tim McInnerny is playing Churchill which I wouldn't be able to guess. He's a little skinny for the role. Overall, it tries hard to be dramatic and works well enough.