Set in the 1930`s, this gangster spoof tells the comic tale of a Johnny Kelly (Michael Keaton) who is forced into a life of crime in order to pay for his ailing mother`s medical treatment. Attempting to keep his straight life and his life of crime separate Johnny takes the name Dangerously and is soon a powerful mobster flush with women and riches. The Dangerously name is about to be slandered, though, by the Kelly family when Johnny`s brother (Griffin Dunne) becomes the district attorney.