Dick Tracy investigates the theft of a fortune of fur coats, a possible insurance swindle and several murders, all linked to a huge thug who wears a hook in place of his right hand.
Susan Kent, hoping to establish herself as a song-plugger, tries to obtain a second song from a young songwriter, Johnny Crane, after his first song becomes a hit. While pursuing her objective, she falls in love with Johnny, and lands in jail, but she acquires the song, the job, and Johnny.
