The tranquil life of a lighthouse keeper and his family is disrupted when a flying saucer and its alien inhabitants invade.

Kit Madden is traveling to Hollywood, where her best-selling novel is to be filmed. Aboard the train, she encounters Marines Rusty and Dink, who don't know she is the author of the famous book, and who don't think much of the ideas it proposes. She and Rusty are greatly attracted, but she doesn't know how to deal with his disdain for the book's author.