First love leads to unexpected responsibilities and difficult decisions in this well-crafted drama. Sally Kelton (Sally Forrest) is a free-spirited young woman who is chafing at the restrictions of living at home with her folks and wants to make something of herself. One evening after work, she stops for a drink with some friends and meets Steve Ryan (Leo Penn), a charming but cynical piano player. Sally falls for Steve in a big way and they embark on a brief romance, but Steve regards Sally as a passing fancy and soon moves on to another town. While Sally follows him, Steve makes it clear things are over between them and he takes a gig in South America. Heartbroken Sally takes a new job at a filling station and general store run by Drew Baxter (Keefe Brasselle), a war veteran with a bad leg and a serious crush on Sally. Sally is still getting over Steve and isn't interested in Drew when she learns that she's carrying Steve's child. The disgraced Sally decides to give her child up for adoption, but finds her maternal instincts are stronger than she expected and her desire to have her baby back leads her on a desperate and dangerous path. While Streets of Sin (aka Not Wanted) is credited to director Elmer Clifton, most of the picture was actually shot under the aegis of co-producer Ida Lupino after Clifton fell ill during production; it was the actress' first film as a director. In the '60s, Streets of Sin was reissued as The Wrong Rut, with the addition of footage of a Caesarian birth "borrowed" from an educational film, and booked into drive-ins and grindhouses on the exploitation circuit.