Kitty Cobb had longings for the big city which she had never seen. One day Kitty met a young civil engineer, Bob Caldecott, on his way to the fort near her home with secret plans. He took her riding in his auto and entertained her with stories of the great metropolis. Bob finally left her at her gate and drove away. But Kitty was restless afterwards, and started to wander over the fields towards the fort. Suddenly she stopped. Before her were three suspicious-looking characters with cameras. They seemed to be taking photographs of the fortifications. Creeping closer, she overheard their conversation. They were spies. Kitty started to run home, but the spies discovered her and gave chase. She outdistanced them, however, and had just time to telephone the fort when the men entered her home, jerked her away from the 'phone and bound her father, mother and herself to chairs. Then they fled. Bob and the Colonel came to the rescue. Young Caldecott devoted himself to comforting Kitty.