A writer for a radio program needs some fresh ideas to juice up his show. For inspiration, he rents a room with a typical American family and begins to secretly write about their true life antics. The show becomes a big hit, but he begins to feel guilty about his charade when he falls in love with the family's pretty older daughter.

Spain in the 1930s is the place to be for a man of action like Robert Jordan. There is a civil war going on and Jordan—who has joined up on the side that appeals most to idealists of that era—has been given a high-risk assignment up in the mountains. He awaits the right time to blow up a crucial bridge in order to halt the enemy's progress.