Cloudbusting (1985)

Shows William Reich and his young son Peter on top of a hill trying to make his cloudbusting machine work. Reich leaves Peter on the machine and returns to his lab. In flashback, he remembers several times he and Peter enjoyed together as Reich worked on various scientific projects, until he is interrupted by government officials who arrest him and ransack the lab. Peter senses his father's danger and tries to reach him, but is forced to watch helplessly as his father is driven away. Peter finally runs back to the cloudbuster and activates it successfully, to the delight of his father who sees it starting to rain.