Ray 'Goose' Gander runs a jazz club in Chicago and he's coming under pressure from mobster Lou Cagan to sell booze at the club. Gander is a former musician who is in the business for the love of the music and wants nothing to do with selling the mob's liquor, but he's being backed into a corner. His protégé, trumpeter Eddie Moon, urges him to pack it in and go on the road but when Gander refuses, Eddie also talks him out of signing up with Cagan. When Gander is shot, Eddie blames himself for the death of his friend and mentor and he works with Eliot Ness and the Untouchables to bring Cagan down. He forms a partnership with Cagan to re-open Gander's club and he also starts an affair with Cagan's wife but he soon falls under suspicion.