China, 1930s, during the ravaging civil war. General Pen entrusts O'Hara, an intrepid American adventurer, with the mission of providing a large sum of money to Mr. Wu with the task of buying weapons in Shanghai to help end General Yang's tyranny that keeps an entire province under his ruthless...
In Shanghai, an American girl who helps runs an opium ring meets an American agent disguised as a mining engineer. The two fall in love, and she has to determine where her loyalties lie.
