The musical Guys and Dolls takes place among the small-time underworld characters of New York. Nathan Detroit (Frank Sinatra) runs a \"floating crap game.\" But he doesn't have enough money to book the next location. And, his (very) long- term fianceé, showgirl Adelaide (Vivian Blaine), is so distressed over his failure to marry her that she has developed a psychosomatic cold. Trying to get the money he needs, Nathan makes a bet with Sky Masterson (Marlon Brando). After Sky brags that he can get any \"doll\" to go out with him, Nathan challenges him to ask Sarah Brown (Jean Simmons), the local mission worker. Sky persuades Sarah to go to Havana for dinner, and, after he spikes her drink with liquor, they have a wonderful time and she starts to fall for him. When they get back, however, she finds that the crap game was held in the mission, and feels betrayed. In order to persuade her that his intentions are honorable, Sky rolls the dice in the crap game against the \"souls\" of the other players, and when he wins, they must all go to a meeting at the mission, the two couples get married, and everyone lives happily ever after.