Monty Gray returns to the US after spending 10 years building railroads in China. As he enters a hotel he runs into an old friend from college whom he hasn't seen in years, and they begin catching up on old times. Monty notices a picture of a young woman that his friend is carrying and, bowled over by her beauty, he instantly falls for her.

The daughter of an American diplomat is forced to spy for Mexican revolutionaries.

Eve Edgarton decides to devote her life solely to her love of botany, but unexpectedly falls in love with a man who shares none of her intellectual interests.