Mill worker and political activist Leopold Dilg (Cary Grant) is accused of burning down a mill and causing the death of a foreman in the fire. In the middle of his trial, Dilg escapes from jail and seeks shelter in a house owned by former schoolmate Nora Shelley (Jean Arthur), now a schoolteacher on whom he has had a crush for years. Shelley has the house rented for the summer to distinguished law professor Michael Lightcap (Ronald Colman), who plans to write a book. Both Lightcap and Dilg arrive within minutes of each other.