Deidra Tanner is a whip-smart high school senior who sells answers to chemistry tests to save up for college, all the while helping her mother raise her stubborn little sister, Laney, and her brother, Jet. It's more than your average teenager can handle, but Deidra runs a tight ship-that is, until Mom blows a mental gasket at her retail job and throws a high-end TV on the pavement.

When Deidra realizes that jail time is ironically proving to be a healthy and therapeutic break from single parent life for her mom, her life is derailed. When she conjures up the will to face her new circumstances, Deidra focuses her talents on the train tracks in her own backyard.