Attorney Tom Cardigan is the discontented "mouthpiece" for Vanny Powers' mob. When Tom takes sweet June Perry as his mistress, she tries in vain to redeem him. But Powers decides Tom would be even more useful to him as District Attorney, which he arranges with surprising ease...despite Tom's warning that "if I go on the other side, I'll stay there." Soon, Tom's ambition leads him to ditch June for the daughter of political boss Ulric. The crisis arrives when Powers goes on trial for a killing...witnessed by June.