An unwed mother named Letta Strong (Loretta Young) was raised in a healthy family environment, but she became pregnant at the age of fifteen and ran away from home. Letta was eventually taken in by an elderly man named Fuzzy (Henry Travers). In due course, Strong gave birth to Mickey (Jackie Kelk) in the back room of Fuzzy's bookstore. Surviving life as a grifter, Letta taught her son Mickey to be streetwise, so that he would not be mistreated like she was. All the while, Fuzzy strongly disapproves of how Letty is raising her son. At age seven, Mickey decides to skip school and wander aimlessly around town. Meanwhile, Letty earns a living by entertaining buyers in order to prop up her friend Steve Karns (Russell Hopton).
