Investigative sports journalist veteran Steve Taggart is working on his latest story - an inside look at professional gambling. The subject of his piece is a man he calls Mr. Green, a degenerate gambler who indirectly ruined his family and yet still can't stop gambling or betting. His editor loves the story but what he doesn't know is that Mr. Green is actually Taggart himself. In order to get more inside info about his topic, Taggart visits various gambling venues and interviews several people including a friendly casino manager and his top cocktail waitress Flo, who was once a gambling addict herself. However, Taggart has bigger problems than dealing with his addiction and finishing his assignment, since his loan shark is threatening to harm his little daughter, who lives in a nice boarding school, unless he pays up his growing debt. Taggart tries to deal with everything his own way - with more gambling. Eventually, writing the article becomes a form of personal catharsis for desperate Taggart and helps him finally decide to try to face his problems, but the story takes an unexpected turn at the end.